This is the 7632nd most frequent Japanese word.
助っ人
"助っ人" means "helper" or "supporter," often referring to someone brought in to assist, especially in sports or teamwork.
The word '助っ人' (Helper) is used to refer to someone who assists or supports specifically in an activity or task, like being a member or participant temporarily.
彼は野球チームの助っ人として呼ばれた。
He was called to be a helper for the baseball team.
In this sentence, '助っ人' (Helper) indicates a person who provides significant help in a specialized capacity to achieve a goal.
助っ人がプロジェクトを成功に導いた。
The helper led the project to success.
Here, '助っ人' (Helper) emphasizes the necessity of someone to provide assistance in a time of need or an important event.