- 1[transitive, intransitive] flunk (something) to fail an exam, a test, or a course I flunked math in fourth grade.
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- 2[transitive] flunk somebody to make someone fail an exam, a test, or a course by giving them a low grade She's flunked 13 of the 18 students. Phrasal Verbsflunk out
flunk
verbNAmE//flʌŋk//
(informal)Verb Forms present simple I / you / we / they flunk he / she / it flunks
past simple flunked
-ing form flunking
Check pronunciation: flunk