fail (Verb) — Not do something; leave something undone. ex. "The secretary failed to call the customer and the company lost the account" ex. "She failed to notice that her child was no longer in his crib"
fail (Verb) — Be unsuccessful. ex. "Where do today's public schools fail?" ex. "The attempt to rescue the hostages failed miserably"
fail (Verb) — Disappoint, prove undependable to; abandon, forsake. ex. "His strength finally failed him" ex. "His children failed him in the crisis" ex. "His sense of smell failed him this time"
fail (Verb) — Stop operating or functioning. ex. "The engine failed on the way to town"
fail (Verb) — Be unable. ex. "I fail to understand your motives"
fail (Verb) — Judge unacceptable. ex. "The teacher failed six students"
fail (Verb) — Be unsuccessful in a test, get lower than the passing grade. ex. "She studied hard but failed nevertheless" ex. "Did I fail the test?"
fail (Verb) — Fall short in what is expected. ex. "She failed in her obligations as a good daughter-in-law" ex. "We must not fail his obligation to the victims of the Holocaust"
fail (Verb) — Become bankrupt or insolvent; fail financially and close. ex. "A number of banks failed that year"
fail (Verb) — Prove insufficient. ex. "The water supply for the town failed after a long drought"
fail (Verb) — Get worse.
fail (Noun) — A non-passing grade in an examination or test.