flunk

Flunk, v. i. [imp. & p. p. Flunked; p. pr. & vb. n. Flunking.] Etym: [Cf. Funk.] Defn: To fail, as on a lesson; to back out, as from an undertaking, through fear. Flunk, v. t. Defn: To fail in; to shirk, as a task or duty. [Colloq. U.S.] Flunk, n. Defn: A failure or backing out; specifically (College cant), Defn: a total failure in a recitation. [U.S.]

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