"flunks" in the noun sense
1. failing, flunk
failure to reach a minimum required performance
"his failing the course led to his disqualification"
"he got two flunks on his report"
"flunks" in the verb sense
1. fail, flunk, bomb, flush it
fail to get a passing grade
"She studied hard but failed nevertheless"
"Did I fail the test?"
Source: WordNet® (An amazing lexical database of English)
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