Flunked vs Failed - What's the difference?

As verbs the difference between flunked and failed

is that flunked is past tense of flunk while failed is past tense of fail.

(head)

(flunk)

(en verb)

(US, ambitransitive) Of a student, to fail a class; to not pass.

He flunked math, again.

(US) Of a teacher, to deny a student a passing grade.

Unsatisfied with Fred's progress, the teacher flunked him.

(US, dated, informal) To shirk (a task or duty).

To back out through fear.

(head)

(fail)

* unfailed