noun
drawing a katana and attacking in the same stroke
Historical swordsmanship term; refers to a technique where the sword is drawn and used to strike in one fluid motion. Not used in modern everyday language.
抜き打ちは、侍の戦闘技術の一つだった。
Nukiuchi was one of the combat techniques of the samurai.
noun, noun which may take the genitive case particle 'no'
sudden; unannounced; without warning
Commonly used as a noun or with の to describe an action done abruptly and without prior notice, such as inspections, tests, or visits.
今日は抜き打ちのテストがあった。
We had a surprise test today.
抜き打ち検査が行われた。
An unannounced inspection was carried out.
突然 is a general adverb/adjective meaning 'suddenly', while 抜き打ち emphasizes the lack of prior notice and is often used for official actions like inspections.
不意 means 'unexpected' and focuses on the element of surprise, whereas 抜き打ち specifically implies doing something without warning, often in a procedural context.
Compound of 抜き (nuki, 'drawing' from 抜く) and 打ち (uchi, 'striking' from 打つ), originally referring to the swordsmanship technique. The modern sense of 'sudden, without warning' is a figurative extension of the swift, surprise nature of the original action.