fail

disappoint, prove undependable to; abandon, forsake

“His sense of smell failed him this time”

be unable

“I fail to understand your motives”

become bankrupt or insolvent; fail financially and close

“A number of banks failed that year”

be unsuccessful

“Where do today's public schools fail?”

fail to do something; leave something undone

“She failed to notice that her child was no longer in his crib”

stop operating or functioning

“The engine failed on the way to town”

prove insufficient

“The water supply for the town failed after a long drought”

fail to get a passing grade

“She studied hard but failed nevertheless”

fall short in what is expected

“She failed in her obligations as a good daughter-in-law”

get worse

judge unacceptable

“The teacher failed six students”