Moved smoothly without using effort or power; sailed along a coast; progressed with minimal exertion.
From coast (Old French 'coste'), with -ed past tense. Originally nautical (sailing along the coast), later generalized to mean moving effortlessly.
There's something poetic about coasted—it started as a sailing term for ships gliding along shorelines, but evolved into describing laziness or coasting through life, showing how maritime vocabulary shaped everyday expression.
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