Definitions

fail

[feyl] / feɪl /

VERB

be unsuccessful

Synonyms

STRONGEST

break down decline fall

STRONG

abort backslide blunder deteriorate fizzle flop flounder fold founder miscarry miss slip

WEAK

back wrong horse be defeated be demoted be found lacking be in vain be ruined come to naught come to nothing fall flat fall short fall through go astray go down go down swinging go downhill go up in smoke go wrong hit bottom hit the skids lose control lose out lose status meet with disaster miss the boat play into run aground turn out badly

Antonyms

STRONGEST

ascend go up rise

STRONG

accomplish achieve build correct develop do well succeed

WEAK

capture complete deliver earn finish gain merit obtain procure prosper reach win

VERB

abandon, forsake

Synonyms

STRONGEST

ignore neglect

STRONG

abort blink desert disappoint discount disregard fault forget funk miscarry omit overlook slight slip

WEAK

back out break one's word go astray let down overpass

Antonyms

STRONG

attend pay attention regard remember respect

WEAK

accomplish achieve capture complete deliver earn finish gain merit obtain procure prosper reach succeed win

VERB

lose money

Synonyms

STRONGEST

break close drop end finish

STRONG

crash defalcate default dishonor fold overdraw repudiate terminate

WEAK

be cleaned out be in arrears be ruined be taken to the cleaners become insolvent close down close one's doors drop a bundle go bankrupt go belly up go broke go bust go into Chapter 11 go out of business go to the wall go under go up lose big lose one's shirt

Antonyms

STRONGEST

begin commence continue start

WEAK

accomplish achieve capture complete deliver earn gain merit obtain procure prosper reach succeed win

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

And the officials who tormented Landor, he concluded, did not provide that consent, so the lawsuit has to fail.

From Slate • Jun. 23, 2026

“If our competitors’ AI products achieve higher market acceptance than ours, or if we incur costs higher than expected to build and support our AI products, we may fail to recoup our investments,” Oracle said.

From The Wall Street Journal • Jun. 23, 2026

"We're still evaluating what caused the car to fail to control its speed just before this crash," he said.

From BBC • Jun. 22, 2026

Developers are striving to achieve fault tolerance by the end of the decade, which means building a machine that can run smoothly even when its individual parts fail or experience disruption.

From Barron's • Jun. 22, 2026

Which makes me think of the holiday concert and my slide fail and the locked closet, and I blink hard to make the memories stop.

From "Muffled" by Jennifer Gennari

fail

Example Sentences

Related Words