be-all and end-all


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(not) the be-all and end-all

The most important event or thing. Often used in the negative. My little sister thinks that a date with the captain of the football team is just the be-all and end-all of her life right now. Oh honey, I know you're disappointed, but failing the driver's license test is not the be-all and end-all. You'll just practice some more and then take it again.
See also: and

be-all and end-all

Cliché something that is the very best or most important; something so good that it will end the search for something better. Finishing the building of his boat became the be-all and end-all of Roger's existence. Sally is the be-all and the end-all of Don's life.
See also: and