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supersonic

How to pronounce supersonic:

Synonyms for supersonic:

inaudible
ultrasonic

Antonyms for supersonic:

crawling
creeping
dallying
dawdling
dilatory
dillydallying
dragging
laggard
lagging
languid
leisurely
lingering
plodding
ponderous
slow
slow-moving
sluggish
snail-paced
snaillike
tardy
tortoise-like
ultraslow
unhurried
unrushed
Other 4-syllable words

Here are some other common 4-syllable words.

See all 4-syllable words
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Polysyllabic words have more than one syllable, such as 'amazing', which has three syllables.

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