合鍵(あいかぎ)

あいかぎ
noun
duplicate key; spare key
tooldaily-life
1. duplicate key; spare key
A copy of a key made to open the same lock.
合鍵(あいかぎ)を作(つく)る。
To have a duplicate key made.
母(はは)に部屋(へや)の合鍵(あいかぎ)を渡(わた)してある。
I've given my mother a spare key to my apartment.
付(つ)き合(あ)って一年(いちねん)たったとき、彼女(かのじょ)は初(はじ)めて部屋(へや)の合鍵(あいかぎ)をくれた。
When we'd been dating a year, she gave me a key to her apartment for the first time.

Common collocations

Cultural note

  • Giving a partner the 合鍵(あいかぎ) to one's apartment is a familiar marker of a serious relationship in Japanese dramas and songs. In rental apartments, copying a key may need the landlord's permission.

Writing

  • Also written 合(あ)い鍵(かぎ).
general
Added 2026.9.30 3:07 · Revised 2026.9.30 3:08
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