Indicates admiration for someone's tenacity, especially in tough circumstances. Even after losing his job, he's a real stayer and is confident he'll find a new one.
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Not a Quitter
Suggests someone doesn't give up easily, could inspire others facing adversity. She's a stayer; she kept studying despite failing the test twice.
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Metaphoric Use
Often used metaphorically to describe inanimate objects or concepts with endurance. That old car is a stayer, lasting over 20 years with minimal repairs.