Synonyms/Hypernyms (Ordered by Estimated Frequency) of noun whirring

1 sense of whirring

Sense 1
whir, whirr, whirring, birr -- (sound of something in rapid motion; "whir of a bird's wings"; "the whir of the propellers")
       => sound -- (the sudden occurrence of an audible event; "the sound awakened them")

Synonyms/Hypernyms (Ordered by Estimated Frequency) of verb whir

1 sense of whir

Sense 1
whizz, whiz, whirr, whir, birr, purr -- (make a soft swishing sound; "the motor whirred"; "the car engine purred")
       => sound, go -- (make a certain noise or sound; "She went `Mmmmm'"; "The gun went `bang'")

Antonyms of adj whirring

1 sense of whirring

Sense 1
whirring -- (like the sound of rapidly vibrating wings)

INDIRECT (VIA noisy) -> quiet -- (free of noise or uproar; or making little if any sound; "a quiet audience at the concert"; "the room was dark and quiet")

Similarity of adj whirring

1 sense of whirring

Sense 1
whirring -- (like the sound of rapidly vibrating wings)
       => noisy (vs. quiet) -- (full of or characterized by loud and nonmusical sounds; "a noisy cafeteria"; "a small noisy dog")