Synonyms of fail

fail

verb

ˈfāl 

1

as in to die

to stop functioning

my car failed just as I was about to head to work

Synonyms & Similar Words

• die
• crash
• stall
• break
• cut out
• give out
• break down
• sputter
• conk (out)
• fizzle
• malfunction
• act up
• jam
• wheeze

Antonyms & Near Antonyms

• start (up)

2

as in to collapse

to be unsuccessful

despite all the publicity, the movie failed miserably at the box office

Synonyms & Similar Words

• collapse
• miss
• flop
• struggle
• fold
• flunk
• bomb
• strike out
• fall short
• tank
• come up empty
• fall flat
• decline
• come to grief
• flame out
• wash out
• lay an egg
• die on the vine
• founder
• crash
• come a cropper
• slip
• crumble
• crater
• flounder
• fall on one's face
• wane
• sink
• slump
• miscarry
• implode
• skid
• misfire
• go under
• self-destruct

Antonyms & Near Antonyms

• succeed
• go
• deliver
• click
• work out
• go over
• come off
• thrive
• prosper
• flourish
• cook
• win
• prevail
• pan out
• triumph

3

as in to disappoint

to fall short in satisfying the expectation or hope of

although the minor-league franchise continues to fail local fans, hope springs eternal

Synonyms & Similar Words

• disappoint
• let down
• cheat
• displease
• upset
• dissatisfy
• distress
• bum (out)
• deceive
• disillusion
• delude
• disenchant
• mock
• discontent
• chagrin
• disgruntle

Antonyms & Near Antonyms

• satisfy
• fulfill
• gratify
• content
• gladden

4

as in to weaken

to lose bodily strength or vigor

ever since she reached the age of 90, Grandma has been noticeably failing

Synonyms & Similar Words

• weaken
• fade
• go
• sag
• sink
• deteriorate
• wilt
• languish
• droop
• wither
• decay
• waste (away)
• lag
• flag
• emaciate
• wear out
• yield
• break down
• rot
• degenerate
• run down

Antonyms & Near Antonyms

• recover
• rally
• recuperate
• rebound
• gain
• convalesce

5

as in to forget

to miss the opportunity or obligation

failed to mention that he was looking for new job

Synonyms & Similar Words

• forget
• neglect
• omit
• ignore
• miss out on
• disregard
• pass over
• overlook
• skip
• slight
• slide
• pretermit
• default
• slip
• overpass

Antonyms & Near Antonyms

• remember
• do
• keep
• observe
• mind
• perform
• execute
• meet
• carry out
• heed
• practice
• satisfy
• fulfill
• comply (with)
• discharge

Example Sentences

Recent Examples of fail

Even a few tweaks on the experiment to substitute the heavy water for a layer of graphite would have failed, given the purity of the materials available. — Mike McRae 06, New Atlas, 6 Oct. 2026

The tractor failed to stop at a stop sign, then rolled over multiple times after the driver turned the wheel to the right, according to the sheriff's office. — ABC News, 6 Oct. 2026

Each lawsuit alleges the district failed to adequately supervise employees or students. — Camryn Dadey, Sacbee.com, 6 Oct. 2026

In fact, 99% of drugs developed for Alzheimer’s that showed promise in the lab failed in human clinical trials. — Julie Moreno, The Conversation, 6 Oct. 2026