()()

ぬきうち
noun
surprise (inspection/test); unannounced; sudden
descriptive
1. surprise; unannounced; without prior notice
An action carried out suddenly and without advance warning, typically an inspection, test, or check. Almost always used as a modifier with の or in compound form.
()()テストあった
There was a surprise test.
An unannounced inspection was carried out.
保健所(ほけんじょ)()()飲食店(いんしょくてん)調(しら)べることある
The health center sometimes inspects restaurants without prior notice.
The teacher likes giving pop quizzes.

Originally a kendo term meaning to draw and strike in one motion, ()()ち now primarily refers to doing something without advance notice. It is almost always used as a noun modifier: ()()〜 or ()().

Common collocations

Similar words