illusory
/ɪˈluː.sər.i/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.
- The sense of control she felt was completely illusory.
- Their agreement turned out to be illusory — they disagreed on everything.
- The economic growth of those years proved to be illusory.
Adinary Nuance
Illusory sits close to deceptive, fictitious, imaginary, and misleading — but each word points at something slightly different. Deceptive always implies an agent: a person, an appearance, or a design that is actively leading you astray. Illusory carries no blame — it simply describes something that has no real substance, the way a mirage has no water. Imaginary means something exists only in the mind, often consciously (an imaginary friend, an imaginary world); illusory means something seems to exist in the real world but does not hold up under scrutiny. In IELTS and academic writing, illusory is the preferred choice when describing gains, freedoms, or promises that appear real but have no lasting or genuine substance — a register where fake or false would sound too blunt.
In other languages
- Vietnamese
- Ảo tưởng
- Spanish
- Ilusorio
- Chinese
- 虚幻的
- Japanese
- 幻の
- Korean
- 허상의
Etymology
From Late Latin *illusorius* ("mocking, deceptive"), rooted in *illudere* — meaning "to mock" or "to play against" (from *in-* + *ludere*, "to play"). The word entered English in the late 16th century and has always carried a formal, philosophical tone.
Common phrases
Synonyms
Related words
Frequently asked questions
- Is 'illusory' formal or informal?
- It is formal and academic. You will rarely hear it in casual conversation. It appears frequently in IELTS essays, academic papers, and formal arguments about economics, politics, or philosophy.
- What is the difference between 'illusory' and 'deceptive'?
- 'Deceptive' suggests someone or something is actively misleading you — there is an intent or a cause. 'Illusory' simply means the thing has no real substance; no one needs to be blamed. For example, a mirage is illusory, not deceptive.
- Can I say 'illusory' about a person?
- Not naturally. 'Illusory' describes qualities, ideas, or states — like 'illusory security' or 'illusory progress' — not people. To describe a person who tricks others, use 'deceptive' or 'misleading' instead.
- Is 'illusory' useful for IELTS writing?
- Yes, absolutely. It is a high-band vocabulary word. Use it when arguing that an apparent benefit or improvement is not as real as it appears — for example, 'The benefits of this policy are largely illusory.'