fail
verb
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”
Synonymsneglectbe unsuccessful
“Where do today's public schools fail?”
“The attempt to rescue the hostages failed miserably”
Oppositessucceeddisappoint, prove undependable to; abandon, forsake
“His sense of smell failed him this time”
“His strength finally failed him”
Synonymsbetraystop operating or functioning
“The engine finally went”
“The car died on the road”
be unable
“I fail to understand your motives”
Oppositesmanagejudge unacceptable
“The teacher failed six students”
Oppositespassfail to get a passing grade
“She studied hard but failed nevertheless”
“Did I fail the test?”
Oppositespassfall 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”
prove insufficient
“The water supply for the town failed after a long drought”
get worse
“Her health is declining”
Source: WordNet 3.1, Princeton University
