- 1[intransitive] to make a very loud, deep sound We heard a lion roar. The gun roared deafeningly. The engine roared to life (= started noisily). The wind was roaring in my ears.
- 2[intransitive, transitive] to shout something very loudly The crowd roared. roar something (out) The fans roared (out) their approval. He roared out James's name. + speech “Stand back,” he roared.
- 3[intransitive] to laugh very loudly He looked so funny, we all roared. roar with laughter It made them roar with laughter.
- 4 [intransitive] + adv./prep. (of a vehicle or its rider/driver) to move very fast, making a lot of noise She stepped on the gas and the car roared away. A group of young men on motorcycles roared past.
- 5[intransitive] (of a fire) to burn brightly with a lot of flames, heat, and noise A log fire was roaring in the hearth.
NAmE//rɔr//Verb Forms present simple I / you / we / they roar
he / she / it roars
past simple roared
-ing form roaring