Translation guide
How to express the idea of a substitute or replacement item in Japanese, depending on context.
Referring to an item used in place of another, often due to unavailability or preference.
A substitute article, something used in place of the original. Common in everyday contexts.
I used margarine as a substitute for butter.
A substitute or alternative product, often used in business or technical contexts.
I'm looking for a substitute for this part.
A substitute or replacement in a broad sense. Often used in the pattern ～の代わり.
I drank tea instead of coffee.
Something or someone used temporarily until the original is available.
An extra item kept for use when needed.
代用品 is more common in everyday language for substitute items. 代替品 is slightly more formal and often used in business or technical contexts.
make do with a substitute
arrange for a substitute product
The English phrase 'substitute article' is not a natural collocation in Japanese. Use the specific terms above depending on context.
A pinch hitter (baseball) or a substitute in a pinch. Casual.
He came in as a pinch hitter.
スペアのタイヤはトランクにある。
The spare tire is in the trunk.