n. The act of acquiescing or giving tacit assent; a silent submission, or submission with apparent consent.n. In law, such neglect to take legal proceedings in opposition to a matter as implies consent thereto.n. Originally, but now rarely, contentment; satisfaction. In the ethics of Spinoza, acquiescence in one's very self is an ignoble self-satisfaction; but acquiescence of the soul in the knowledge of God is the highest result of virtue.