Longman Dictionary of Contemporary English
Wiktionary
n. (context pejorative English) A person, especially one formerly popular or influential, who continues in their field after their popularity or effectiveness has peaked and is now in decline.
WordNet
n. someone who is no longer popular [syn: back-number]
Usage examples of "has-been".
When you're an old has-been politician look me up, and we'll open a chain of beaneries together.
I cannot tell you how much I look forward to seeing tomorrow's headlines in all the American newspapers which so contemptuously wrote me off as a nonentity and washed-up has-been when I was deported two years ago.
A has-been, a may-one-day-be, a dreamfaring dodo bird, and I might have to stay.
It came on then, big and ugly: bye-bye Bleichert at the bus stop, adios shitbird, has-been, never-was, stool pigeon niggertown harness bull.
The has-beens and wanna-bes seemed to have signed on to the anti-war lists on the off chance that their faces might appear in some B-roll on CNN so they could get their AFTRA benefits extended another six months.
What the hell's the use of a couple of ancient has-beens like us getting in the way of youth?
There followed twenty minutes of one-day cricket, a makeshift eleven of boozy has-beens versus some itinerant Negroes.
However long he outlives me, he'll bear the stigma of the has-been cowboy hero who married Jezebel.
Even now that he knew, it was hard to believe, hard to elevate the shambling has-been Gorochenko to the level of arch-plotter, overthrower of the state.
Leave the flummery to the would-bes and the has-beens and the never-will-bes.