fail

/feɪl/
verb
  1. To not succeed in achieving something, such as a goal, test, or task.
    • He failed in his attempt to climb the mountain due to bad weather.
    • The team failed to score a single goal in the match.
    • She studied hard but still failed the math exam.
  2. To stop working properly; to break down or cease to function.
    • The engine failed just after takeoff, but the pilot landed safely.
    • My phone battery failed during the important call.
    • The brakes failed on the old car, causing a minor accident.
  3. To not do something that is expected or required.
    • He failed to show up for the meeting without any explanation.
    • The report failed to address the main concerns of the community.
    • The company failed to pay its employees on time.
  4. To be unsuccessful in a business or enterprise; to go bankrupt.
    • The restaurant failed after only six months of operation.
    • His startup failed because they ran out of funding.
    • Many small businesses failed during the economic crisis.
Antonyms
noun
  1. An instance of not succeeding; a failure.
    • The project was a complete fail from the start.
    • The product launch was a fail because of poor marketing.
    • His first attempt was a fail, but he kept trying.
  2. A grade or mark indicating that a student has not passed a test or course.
    • He received a fail in chemistry and had to retake the class.
    • Getting a fail on the final exam meant she couldn't graduate on time.
    • The teacher gave him a fail because he didn't turn in any assignments.
adjective
  1. Describing something that is unsuccessful or of poor quality (informal).
    • He made a fail joke that nobody laughed at.
    • The party was a fail attempt at fun—nobody danced.
    • That movie was so fail; the plot made no sense.