暗黙の了解

あんもくのりょうかい

expression, noun

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tacit understanding, unspoken agreement

暗	darkness, disappear, shade, informal, grow dark, be blinded
黙	silence, become silent, stop speaking, leave as is
了	complete, finish
解	unravel, notes, key, explanation, understanding, untie, undo, solve, answer, cancel, absolve, explain, minute