slow Antonyms

FAST swift prompt quick keen rapid quick-witted hasty talented swiftly tantivy thistly tongued trotting turbo unexpected unhoped striding supple spry steel stir straggling brisken strong-minded subitaneous subito sudden unhoped-for unlooked wise yare yarely untiring at once suddenly speed up speedup step-up winging whirlwind whirling urtication vaulting vivace vivacious vive vivify volant volar