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flunk

1 ENTRIES FOUND:
flunk /ˈflʌŋk/ verb
flunks; flunked; flunking
flunk
/ˈflʌŋk/
verb
flunks; flunked; flunking
Britannica Dictionary definition of FLUNK
US, informal
: to get a failing grade in (something, such as an examination or course) : fail
[+ object]
[no object]
[+ object] : to give a failing grade to (someone) : fail

flunk out

[phrasal verb] US, informal
: to be required to leave a school because you have failed your courses
often + of