n. to wait calmly for something to happen. : I'll just sit here and marinate until you figure out what you want us to do.
Dictionary of American Slang and Colloquial Expressions by Richard A. Spears.Fourth Edition. Copyright 2007. Published by McGraw Hill.
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Word Origin & History
marinate
c.1645, from Fr. mariner "to pickle in (sea) brine," from O.Fr. marin (adj.) "of the sea," from L. marinus (see marine).