Words starting with I

Frozen water in solid form. It is cold and usually becomes water when it warms up.

A person who criticizes or rejects widely accepted ideas or practices.

Relating to iconography: the study or use of images, symbols, and visual representations. It describes pictures, styles, or descriptions that depend on symbols or visual details.

The use of images, symbols, or visual signs to represent a subject, person, or idea. It is often studied in art, religion, and film.

A thought, plan, or picture in your mind about something. It can be a suggestion or a way to do something.

Having high ideals about how people or the world should be. An idealistic person may believe in fairness, peace, or perfect solutions, even when life is difficult.

The quality of a process or action that gives the same result when repeated. In computing, an operation is idempotent if doing it again does not change the outcome.

To name a person or thing correctly, or say who or what it is. It also means to recognize someone or something you have seen before.

the work of controlling who can use computer systems, apps, and data, based on each person's identity. It includes creating user accounts, checking logins, and setting permissions.

A set of ideas and beliefs that shapes how a group thinks about politics, society, or the economy. Ideologies usually guide political parties, governments, and social movements, and they influence decisions about how society should be organised.

A distinctive habit or way of doing something that is typical of a person or group.

Something illusory appears to be real, true, or valuable, but it is actually not. It creates a false impression, like an illusion. You think you have it, but you don't.

To explain something with an example, picture, or story. In academic writing, it often means to make an idea clearer.

Having a good ability to imagine things. An imaginative person can think of new ideas, stories, or solutions. It can also describe something original and creative.

The ability of a substance to cause an immune response in the body. It is often used in medicine, biology, and vaccine research.

Describes something that cannot be changed, altered, or modified in any way. It stays exactly the same forever, no matter what happens.

Impasto is a painting technique where paint is put on thickly, so brush marks and texture are visible. It can also refer to the raised, thick paint itself.

To slow down or make it harder for something or someone to move forward or succeed. It does not mean a complete stop — it means creating difficulty or delay.

If something is imperative, it is absolutely necessary and must be done right away. There is no real choice — it has to happen. This word is stronger than 'important' or 'necessary.'

To put a plan, decision, or system into action. It means taking the steps needed to make something actually work in practice, not just on paper.

Suggested or understood without being directly said. Something implicit is communicated through context, tone, or situation — not through clear words.

To suggest something without saying it directly. The speaker hints at a meaning but does not state it openly.

Something important has a big effect on people, events, or results. It deserves attention because it matters a lot.

To ask someone for something again and again, in a way that is annoying or hard to refuse. It is often more formal than "beg" or "ask".

A style of art and writing that shows the general feeling of a moment, rather than exact detail. In painting, it uses light, color, and quick brushstrokes.

Based on general impressions rather than full facts or careful detail. It can describe writing, art, or comments that feel suggestive, not exact.

Very good, large, or skillful in a way that makes people admire it. It often describes something that is stronger or more striking than ordinary good.

To make something better, or to become better in quality, skill, health, or condition.

The act of making or doing something without planning it first. It often means using what is available at the moment.

To make or do something without planning it first, using what is available. It often means you must act quickly in a new or difficult situation.

Upset, anxious, or emotionally unbalanced. It is used when someone is very worried, angry, or distressed. The phrase is informal and often sounds British.

Very emotional, especially sad, hurt, or sensitive about something. It is informal slang, and people often use it online or in casual speech.

If someone is in one's element, they feel comfortable and natural in a situation. They are doing something they like or are good at.

If someone is in seventh heaven, they feel extremely happy and satisfied. It often describes a strong feeling of joy after good news or a wish coming true.

At the end of a longer period of time, after all results are known. It is used when something may seem difficult now, but its final effect is important.

Very strong joy or excitement that seems to shine or glow. It is a poetic or literary phrase, not a common everyday word.

Something offered to encourage a person to take action or work harder. It is usually a benefit like money, a prize, or a special deal, promised before the action happens.

Just beginning to form, and not yet fully developed or clear. It often describes an idea, plan, feeling, or state that is still vague.

A beginning feeling of strong desire that is not fully formed yet. It is a literary way to describe a wish that is still vague or growing.

To cut into a surface with a sharp tool, especially to make a pattern, mark, or shape. It is a careful, precise kind of cutting.

To take something and make it a part of a larger whole. The thing you add becomes built into the structure, not just placed beside it.

official or necessary because of a duty, rule, or situation. It often describes something that is expected or required in a job or role.

Not interested or not caring about something. It can also mean showing no strong feeling or preference.

strong anger because you think something is unfair, rude, or wrong.

So necessary or important that you cannot manage without it. If something is indispensable, removing it would cause serious problems. It is often used for people, tools, or skills that are truly irreplaceable.

To make something happen as a result of a deliberate action or set of conditions. It often implies that the cause is intentional or controlled.

Too great, beautiful, or overwhelming to be expressed in words. It usually describes something that moves you so deeply that language feels too small to capture it.

Impossible to avoid or escape. It usually describes something that must happen, even if people do not want it.

A very strong feeling of love or liking, often sudden and not lasting. It is usually based more on appearance or excitement than on deep understanding.

To reach a conclusion by thinking carefully about evidence or clues. You are not told the answer directly — you work it out from what you observe or read.

Without any end or limit. It can describe space, time, amount, or possibility.

The basic systems and services that a country, city, or organization needs to work well. This includes roads, power, water, internet, and public transport.

To fill something with a quality, feeling, or idea. It often suggests that the new quality spreads through it slowly and strongly.

The act of adding a quality, idea, or influence to something. It can also mean a small amount of something added this way.

An ingredient is one of the foods or materials used to make a dish, product, or mixture. It can also mean an important part of an idea, plan, or success.

Existing as a natural, permanent part of something. An inherent quality cannot be removed — it belongs to the thing itself.

To hold back, slow down, or make it harder for someone to do something naturally or freely. The blocking force can be internal (like fear or anxiety) or external (like rules or conditions).

To begin something in a deliberate and often formal way. The person who initiates something is the one who takes the first step to make it happen.

A coloured liquid used for writing, drawing, or printing. It is made to flow from a pen, printer, or stamp onto paper.

A person who writes a lot, especially one who spends much of their time writing or editing. It is informal and sometimes slightly old-fashioned.

A calm and peaceful state of mind. It means feeling settled inside, even when life is busy or difficult.

To introduce a new idea, method, or product, or to change something existing in a meaningful new way. It is commonly used in business and technology contexts to describe growth and change.

Using new ideas or methods in a clever and useful way. An innovative person, product, or plan is not just new; it also improves something.

Lacking confidence or certainty. An insecure person often worries about being judged or rejected.

Showing a deep and clear understanding of something. An insightful person or comment reveals something that others might not easily see or notice.

To make someone want to do something creative, good, or difficult. It can also mean to give someone an idea or feeling.

The act of putting a machine, program, or equipment in the right place and making it ready to use.

To make an idea, rule, or model real in a specific form or example. In computing, it also means to create a real object from a class or template.

To cause something — usually something bad or troublesome — to start happening. The person who instigates often works in the background, pushing or encouraging others to act.

Connected with an institution, especially an official organization, school, hospital, or government body. It can also describe something done in a formal, organized system, not by one person alone.

A digital collection where an institution stores its research, articles, theses, and other academic work. It helps people access and preserve these materials in one place.

In a way that relates to an institution, especially an organisation, system, school, or government body. It can also mean in a formal or established way inside such a system.

A system where you pay a company regularly so it helps cover loss, damage, illness, or death. The company gives money if a covered event happens.

So closely connected to something that it cannot be removed without changing the whole thing. If something is integral, it is not just important — it is built in as a necessary part.

To combine two or more things so they work as one. It can also mean to bring someone into a group, system, or society.

The power of the mind to think, reason, and understand ideas in a deep and complex way. It refers especially to the capacity for abstract thought and careful analysis, often valued in academic and intellectual life.

To make something stronger, more extreme, or more serious. You use this when a person, group, or event causes something to grow in force or degree.

The quality of being done on purpose, with clear intention. It can also mean the fact that a thought, action, or plan is directed toward something.

In philosophy, the fact that consciousness is always about something, such as an object, thought, feeling, or event. It describes the directed nature of the mind.

Interactive things involve action between people, a person and a device, or a user and a system. They respond when you do something.

A way of studying or solving a problem that uses ideas from two or more subjects. It brings different fields together to get a fuller result.

Inside a person, group, or thing; not on the outside. It can also mean in a person's mind or feelings, not spoken aloud.

The ability of different systems, devices, or software to work together and exchange information. It is important when tools from different companies need to connect smoothly.

To work together smoothly with another system, device, or software. It means the parts can share information or function together without problems.

A strong worry that close relationships may not last or that other people may leave or reject you. It often shows up as fear, neediness, or constant checking for reassurance.

To insert or add something in the middle of a text, speech, list, or sequence. In academic and technical writing, it can also mean to estimate a missing value from nearby data points.

To find or explain the meaning of something — such as words, data, actions, or art — especially when that meaning is not immediately obvious. It involves active thinking and judgment.

To ask someone a lot of questions, often in a forceful or official way. It can also mean to question someone closely about a crime or problem.

The way one text refers to, copies, changes, or responds to other texts. It is common in literature, film, and media studies.

To twist or join two or more things together so they become mixed or connected. It can also mean to combine ideas, stories, or events closely.

Intransigence is the refusal to change your opinion or agree to something. It often suggests stubbornness in a serious conflict or discussion.

Having many small, closely connected parts or details that are difficult to understand or follow. Often used to describe patterns, systems, or processes that require close attention.

In a complex, detailed, and carefully connected way. Use it when many small parts fit together closely.

Belonging to something as a natural, basic part of it — not given from outside. If something has intrinsic value, it is valuable because of what it is, not because of what it can get you.

a thing or situation that helps you think of an answer quickly without long analysis. It is not a common standard dictionary word, so it often appears in specific writing or as a playful phrase.

Based on a feeling or inner sense rather than facts or careful reasoning. When you know something is right without being able to explain why, that knowing is intuitive.

To flood a place with water, or to cover it completely with a large amount of water. This is often used in formal writing.

money that you put into a business, property, or financial product to earn more money later. It can also mean the act of doing this.

Not able to be seen. Something invisible exists, but your eyes cannot detect it. It can also mean hidden or not noticed.

To ask someone to come to an event, place, or activity. It can also mean asking someone to join in something. It is often used for meetings, parties, meals, and formal occasions.

To officially use a law, rule, or right to support or justify an action. This is the most common meaning in legal and academic writing.

To turn an atom or molecule into an ion by adding or removing electrons. In science, this often changes how the substance behaves.

A strong, hard metal used for tools, buildings, and machines. It is also an essential mineral in the body and in food.

Not guided by logic or clear reasoning. Used to describe thoughts, feelings, or actions that don't make sense when examined carefully.

Irritated means annoyed, bothered, or slightly angry because of something unpleasant. It is often used for a temporary feeling, not a strong rage.

a feeling of being annoyed or angry, especially about something small or repeated.

Having the same shape, structure, or pattern. In math and science, two things are isomorphic when one can match the other in a clear way.

An isotope is a form of a chemical element with the same number of protons but a different number of neutrons. Isotopes have the same atomic number but different atomic mass.

Relating to isotopes, which are forms of the same chemical element with different masses. It is used in science, especially chemistry, physics, and geology.

An itinerary is a plan or list of places you will visit on a trip. It can also include travel times, activities, and dates.