闇やみに紛まぎれてMeanings1expressionunder cover of night; under cover of darknessFixed expression meaning taking advantage of darkness to act secretly or escape notice.犯はん人にんは闇やみに紛まぎれて逃にげ去さった。The culprit escaped under cover of darkness.闇やみに紛まぎれて忍しのび込こむ。Sneak in under cover of night.