verb

 

not succeed to not be successful

Dad's business failed after just three years.

 

exam to not pass a test or an exam, or to decide that someone has not passed

I'm worried about failing my driving test.

 

stop working to stop working normally, or to become weaker

Two of the plane's engines had failed.

 

not helping to stop being helpful or useful to someone when they need you

The government is failing the poor and unemployed.

 

noun

 

If you do something without fail, you always do it, also when it is difficult.

I go to the gym every Monday and Thursday without fail.