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Pronunciation change

Noun change

Singular
porpoise

Plural
porpoises

 
A porpoise
  1. (countable) A porpoise is a small aquatic mammal of the family Phocoenidae. It is related to dolphins and whales.

Verb change

Plain form
porpoise

Third-person singular
porpoises

Past tense
porpoised

Past participle
porpoised

Present participle
porpoising

  1. If you porpoise, you move through water like a porpoise.