EXAMPLES FROM THE WEB FOR QUITTER
"I knew he was a quitter;" the woman's companion was pessimistic.
"A quitter will quit and a bleeder will bleed," said the Kid sententiously.
It always seemed to me that it took a lot of practice to be a quitter.
The quitter can't survive where the plugger has the ghost of a chance.
The patron saint of the successful advertiser hates a quitter.
I may prove to be a quitter, Miss Farley, but I'd like at least to be entered for the game.
Lennon was a white man, and he had proved himself not a quitter.
But Tim Garvey is no quitter; at least, I've never had that name.
I've been a quitter all my life, I'll admit, but I'm going to put up my fists at the end.
Sensing this, he said grimly: "So you thought I was a quitter."
as an insult, 1881, American English, agent noun from quit (v.).