noun
Dated slang for a casual apology or request for pardon, similar to 失礼 but with a more old-fashioned, rough, or jocular feel. Not used in modern polite conversation.
See also: 失礼
「すんずれい」なんて、今どき聞かないよ。
You don't hear 'sunzurei' these days.
昔の不良漫画で「すんずれい!」って言うシーンがあった。
In old delinquent manga, there was a scene where someone said 'Sunzurei!'