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priceā§less

1 extremely valuable :
priceless antiques
priceless antiques2 a quality or skill that is priceless is extremely important or useful :
The ability to motivate people is a priceless asset.
The ability to motivate people is a priceless asset.3 informal extremely funny or silly :
The look on his face was priceless.
The look on his face was priceless.