fast noun verb adjective adverb Stress: first syllable π€ Save Syllables: fast (1) English Definition moving or capable of moving at high speed Example Sentence The cheetah is a very fast animal. US IPA /fΓ¦st/ π Listen US UK IPA /fΙΛst/ π Listen UK Synonyms quick rapid swift speedy fleet Antonyms slow sluggish leisurely Share this Word Facebook WhatsApp X Telegram Copy Link