Skip to content

Dictionary-enhanced word family

Word Forms of “Fail”

To not succeed at a task or exam; to stop working properly.

Word Family of Fail

What is the noun of fail? — failure

failure

What is the verb of fail? — fail

fail

What is the adjective of fail? — failed

failed

How to Use Each Word Form in a Sentence

  • He studied hard but still failed the difficult exam. A2
  • The negotiations failed because both sides couldn't agree. B1
  • If the engine fails while driving, pull over safely. B1

Origin and Word Formation of Fail

From Old French faillir, from Vulgar Latin fallīre (to deceive, disappoint).

Frequently Asked Questions About Word Forms of Fail

What are the word forms of “fail”?

The confirmed forms are shown in the word family cards above. Missing parts of speech are hidden instead of filled with placeholder text.

What part of speech is “fail”?

“fail” is primarily a verb. Some forms above show how the same root works as other parts of speech.

Where does “fail” come from?

From Old French faillir, from Vulgar Latin fallīre (to deceive, disappoint).

Explore “Fail” in Other Tools