speed noun verb Stress: first syllable 🤍 Save Syllables: speed (1) English Definition The rate at which someone or something is able to move or operate. Example Sentence The car was traveling at high speed. US IPA /spid/ 🔊 Listen US UK IPA /spiːd/ 🔊 Listen UK Synonyms velocity pace tempo swiftness Antonyms slowness delay Share this Word Facebook WhatsApp X Telegram Copy Link