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swim

What is the past tense of swim?

The past tense of swim is swam, and the past participle is swum.

Swim is an irregular (strong) verb: the vowel changes instead of adding -ed.

All forms of swim

as a noun

base
swim
plural
swims

as a verb

base
swim
past tense
swam
past participle
swum
present participle
swimming
third-person singular
swims