Translation guide
The English word "variable" can refer to something that changes, a factor in a situation, or a mathematical symbol. This guide covers how to express these meanings naturally in Japanese.
Describing something that can vary or is subject to change, such as weather, mood, or conditions.
Common adjective meaning 'easily changeable' or 'prone to change'. Used for weather, moods, etc.
春の天気は変わりやすい。
Spring weather is variable.
Verb meaning 'to fluctuate' or 'to vary', often used for numerical values, prices, or conditions.
株価は常に変動している。
Stock prices are constantly variable.
Phrase meaning 'not constant' or 'unstable'. Used for things that lack consistency.
彼の成績は一定しない。
His grades are variable.
Referring to one of several factors that affect a situation or outcome.
Common noun meaning 'factor' or 'cause'. Used in analysis or discussion of contributing elements.
成功には多くの要因が関わっている。
Many variables are involved in success.
Literally 'variable' in a mathematical or programming sense, but can be used metaphorically for a factor that changes.
General word for 'element' or 'component'. Often used in contexts like 'key variable'.
A symbol representing a value that can change, used in math, science, or computing.
The standard term for a mathematical or programming variable.
この方程式ではxとyが変数です。
In this equation, x and y are variables.
要因 (よういん) is best for causal factors in real-world situations. 変数 (へんすう) is primarily mathematical but can be used metaphorically. 要素 (ようそ) is a general 'element' and is less specific about changeability.
この問題には未知の変数が多すぎる。
There are too many unknown variables in this problem.
I overlooked an important variable in the plan.