stochastic
/stəˈkæs.tɪk/ IELTSAcademic
adjective
Based on chance or probability rather than fixed rules. In science and statistics, it describes things that can vary unpredictably.
- The model uses stochastic methods.
- Weather changes are often stochastic.
- Random noise can affect the result.
Adinary Nuance
Stochastic is more technical than random or uncertain. Writers use it in science, math, and research when chance is part of a system, not just when something is unpredictable. In everyday English, random is usually simpler and more natural.
In other languages
- Vietnamese
- ngẫu nhiên
- Spanish
- estocástico
- Chinese
- 随机的
- Japanese
- 確率的な
- Korean
- 확률적인
Etymology
From Greek stochastikos, meaning “able to aim at” or “skilled at guessing.” It entered English through scientific and statistical writing in the 20th century.
Common phrases
stochastic processstochastic modelstochastic systemstochastic variation
Synonyms
Related words
Frequently asked questions
- Is stochastic a common everyday word?
- No. It is mostly used in academic, scientific, and technical English.
- What is the difference between stochastic and random?
- Random is more general. Stochastic is more technical and often refers to probability in a system.
- Can I use stochastic in business writing?
- Yes, if the topic is statistics, forecasting, or risk. Otherwise, simpler words are better.
- How do I use stochastic in a sentence?
- Use it before a noun: “stochastic process,” “stochastic model,” or “stochastic variation.”