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.

While these treatments have helped many patients, a significant number either fail to respond or eventually develop resistance.

From Science Daily • Jun. 9, 2026

Silkie Carlo, director of Big Brother Watch, said: "Protecting children online is vital, but these are outrageous plans that will fail to address the underlying causes of online harm."

From BBC • Jun. 8, 2026

"The policy of continuously strengthening the country's self-defensive nuclear deterrent, as set out by the nation's leader, is an irreversible course that must be implemented without fail," she added.

From Barron's • Jun. 7, 2026

Without fail, the miniature version of me would blubber at Sully the polka dot monster reuniting with Boo, and Marlin the clownfish traversing the ocean to find his son.

From Salon • Jun. 6, 2026

“They thought they were being followed,” said Fernande Olivier, Picasso’s partner, who’d just watched them fail to play cards.

From "The Mona Lisa Vanishes" by Nicholas Day

fail

Example Sentences

Related Words