quack verb - Definition, pictures, pronunciation and usage notes | Oxford Advanced American Dictionary at OxfordLearnersDictionaries.com

Definition of quack verb from the Oxford Advanced American Dictionary

quack

verb

NAmE//kwæk//

[intransitive]Verb Forms present simple I / you / we / they quack

he / she / it quacks

past simple quacked

-ing form quacking

when a duck quacks, it makes the noise that is typical of ducks

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