合い言葉

• 読み: あいことば
• ローマ字: aikotoba
• 漢字の分解: 合 (gou/a) — fit, match; 言 (gen/ko) — say, word; 葉 (you/ha) — leaf, word
• 発音: /ai.ko̞.to̞.ba/

意味

Password; watchword; shared motto or slogan. A word or phrase used for mutual identification or to signal shared purpose.

A noun used for secret passwords or identification phrases, as well as rallying slogans that unify a group. In modern usage it can refer to a catchphrase or shared motto (e.g., a team slogan). The 合い component means 'mutual/fitting' and 言葉 means 'words/language.' Common in both security contexts and group identity contexts.

例文

1. 部隊は夜間の合い言葉を事前に取り決めておいた。
2. このグループの合い言葉は一致団結という言葉だ。
3. 子どもたちは秘密基地への合い言葉を仲間内だけで共有していた。

使い方ガイド

場面: security, groups, teamwork, military

トーン: neutral

起源と歴史

From 合い (fit, match, mutual) + 言葉 (word, language). Historically used as military challenge-and-response passwords where both parties exchange matching phrases to verify identity.

文化的背景

時代: Classical-Modern

世代: All ages

社会的背景: General