Flunk

[fluhngk] /flʌŋk/

verb (used without object)
1.
to fail in a course or examination.
verb (used with object)
2.
to fail to get a passing mark in:
to flunk math.
3.
to give a failing grade to; remove (a student) as unqualified from a school or course.
noun
4.
a failure, as in a course or examination.
Verb phrases
5.
flunk out, to fail and be unable to continue in:
He flunked out of flight school.
/flʌŋk/
verb
1.
to fail or cause to fail to reach the required standard in (an examination, course, etc)
2.
(intransitive) foll by out. to be dismissed from a school or college through failure in examinations
noun
3.
a low grade below the pass standard
v.

1823, American English college slang, original meaning “to back out, give up, fail,” traditionally said to be an alteration of British university slang funk “to be frightened, shrink from” (see funk (n.1)). Related: Flunked; flunking.

noun

: I’ve got three passes and two flunks

verb

[1823+ College; origin unknown; perhaps a blend of fail with funk, perhaps echoic of a dull collapse]