代だい替たい

also: だいがえ

だ

い

た

い

Common wordFreq.FrequencyTop 10,000

Meanings

noun, noun or participle which takes 'suru', transitive verb

The act of replacing one thing with another, often in formal or technical contexts. Can be used as a noun or with する.

故こ障しょうした部ぶ品ひんを代だい替たい品ひんと交こう換かんした。
We replaced the broken part with a substitute.
この

薬くすり

は

先せん

発ぱつ

品ひん

の

代だい

替たい

と

し

て

使つか

わ

れる

。

This drug is used as a substitute for the brand-name product.

noun which may take the genitive case particle 'no'

Describes something that can be used instead of the usual thing; often used attributively with の.

代だい替たい案あんをいくつか提てい案あんしてください。
Please propose some alternative plans.
牛ぎゅう乳にゅうがないので、豆とう乳にゅうを代だい替たいとして使つかった。
Since there was no milk, I used soy milk as a substitute.

代替Usage99%
- だいたい
  Standard kanji spelling for both readings; だいたい is the most common reading.
- だいがえ
  Alternate reading of the same kanji form; less common than だいたい.
代だい替がえUsage1%
Spelling with okurigana, often associated with the reading だいがえ.
だいがえUsage<1%

代だい用よう
代用 also means substitution, but often implies a temporary or makeshift replacement, while 代替 can be more formal and systematic.
交こう換かん
交換 means exchange or swap, focusing on the act of trading, whereas 代替 emphasizes replacing one thing with another.

Compound of 代 (replace) and 替 (exchange). The reading だいたい is the standard on'yomi, while だいがえ is a mixed on-kun reading.