Translation guide
How to express 'substitute' in Japanese depends on whether you mean a person or thing that replaces another, the act of substituting, or using something as an alternative. Common words include 代わり (kawari), 代理 (dairi), and 代替 (daitai), each with different nuances and contexts.
Referring to a replacement person or object, often temporary.
We are looking for a substitute for him.
I used honey as a substitute for sugar.
Specifically refers to a person acting as a representative or proxy, often in formal or business contexts. Not used for things.
I will attend the meeting as a substitute for the department head.
Means 'substitution' or 'alternative', often used for things, systems, or methods. Common in compound words like 代替品 (substitute product).
We need to develop alternative energy sources.
A person who takes the place of another, often in a sacrificial or protective sense. Can imply a scapegoat or body double.
He took the punishment as a substitute for his friend.
Describing the action of using one thing instead of another.
A common phrase meaning 'to use as a substitute'. The pattern is [noun]の代わりに使う.
I used margarine as a substitute for butter.
A verb meaning 'to substitute' or 'to use as a replacement', often for objects or materials. Slightly formal.
Means 'to exchange' or 'to replace', often implying a swap. Can be used for substituting one thing for another.
Referring to a player who replaces another during a game.
Standard term for a substitute player or reserve in sports. Also used for alternates in other contexts.
He went from substitute to starting lineup.
Literally 'reserve player', commonly used in sports contexts.
Abbreviation of 'substitute', used in casual sports talk. From English 'sub'.
Expressing the action of replacing B with A.
The most natural way to say 'substitute A for B'. Literally 'make A the substitute of B'.
I substituted tofu with egg.
A more formal pattern meaning 'to substitute B with A'. Often used in written instructions.
You can substitute potato starch with wheat flour.
代わり (kawari) is the most general and can be used for people or things in everyday situations. 代理 (dairi) is specifically for a person acting as a representative, often in formal settings. 代替 (daitai) is used for things, systems, or abstract concepts, and appears in technical or written contexts.
The English verb 'substitute' can be tricky because 'substitute A for B' means use A instead of B. In Japanese, the pattern is usually AをBの代わりにする (make A the substitute of B). Be careful not to reverse the objects.
This ingredient can be substituted with something else.
I substituted the old part with a new one.
The substitute player entered the game.
The sub player performed well.