忍しのび忍しのびMeanings1adverbstealthily; secretlyarchaicArchaic adverb meaning to do something in a stealthy or secretive manner, often with a nuance of moving quietly or avoiding notice. Rare in modern Japanese; replaced by こっそり or 忍んで.忍しのび忍しのびに城しろを抜ぬけ出だした。He stealthily slipped out of the castle.
