"failing" in the noun sense
1. failing, weakness
a flaw or weak point
"he was quick to point out his wife's failings"
2. failing, flunk
failure to reach a minimum required performance
"his failing the course led to his disqualification"
"he got two flunks on his report"
"failing" in the verb sense
1. fail, neglect
fail to do something leave something undone
"She failed to notice that her child was no longer in his crib"
"The secretary failed to call the customer and the company lost the account"
2. fail, go wrong, miscarry
"Where do today's public schools fail?"
"The attempt to rescue the hostages failed miserably"
3. fail, betray
disappoint, prove undependable to abandon, forsake
"His sense of smell failed him this time"
"His strength finally failed him"
"His children failed him in the crisis"
4. fail, go bad, give way, die, give out, conk out, go, break, break down
stop operating or functioning
"The engine finally went"
"The car died on the road"
"The bus we travelled in broke down on the way to town"
"The coffee maker broke"
"The engine failed on the way to town"
"her eyesight went after the accident"
"I fail to understand your motives"
"The teacher failed six students"
7. fail, flunk, bomb, flush it
fail to get a passing grade
"She studied hard but failed nevertheless"
"Did I fail the test?"
fall short in what is expected
"She failed in her obligations as a good daughter-in-law"
"We must not fail his obligation to the victims of the Holocaust"
become bankrupt or insolvent fail financially and close
"The toy company went bankrupt after the competition hired cheap Mexican labor"
"A number of banks failed that year"
10. fail, run out, give out
"The water supply for the town failed after a long drought"
"Her health is declining"
"failing" in the adjective sense
below acceptable in performance
"received failing grades"
Source: WordNet® (An amazing lexical database of English)
Princeton University "About WordNet®."
WordNet®. Princeton University. 2010.
View WordNet® License