代打|だいだdaida[1]atamadaka (head-high)

1. noun, baseballpinch-hitting; pinch hitter
   彼かれはその試合しあいに代打だいだとして出場しゅつじょうした。↗

   He appeared as a pinch hitter in the game.
2. nounperforming a duty in place of someone else; proxy

• SynonymピンチヒッターNeutralLoanword for a pinch hitter or someone filling in temporarily; often used figuratively. 「代打」 is the more common choice.
• Related代打者だいだしゃNeutralRefers specifically to the player who takes the pinch-hit at-bat — a person only, while 「代打」 covers both the act and the person.

Use 「代打」 for pinch-hitting in baseball or for temporarily standing in for someone, as in 「代打で出場」 and 「司会の代打」. The loanword 「ピンチヒッター」 is an option; when you mean the person, 「代打者」 is clearest.

Usage comparisons are AI-assisted and cross-checked by multiple models; for study reference only

1. 野球やきゅうで、試合中しあいちゅうに打者だしゃの代かわりに打うつこと。また、その打者だしゃ。
2. 自分じぶんの代かわりに仕事しごとや役目やくめをすること。また、その人ひと。