Definition of priceless adjective from the Oxford Advanced Learner's Dictionary

     

    priceless

     adjective
    adjective
    BrE BrE//ˈpraɪsləs//
     
    ; NAmE NAmE//ˈpraɪsləs//
     
     
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  1. 1extremely valuable or important a priceless collection of antiques priceless information Our family photos are priceless. Synonymsvaluableprecious priceless irreplaceableThese words all describe something that is worth a lot of money or very important to somebody.valuable worth a lot of money:The thieves took three pieces of valuable jewellery.precious rare and worth a lot of money; loved or valued very much:a precious Chinese vase, valued at half a million pounds precious memories of our time togetherpriceless extremely valuable; loved or valued very much:a priceless collection of antiquesirreplaceable too valuable or special to be replacedPatterns valuable/​precious/​priceless/​irreplaceable possessions valuable/​precious/​priceless antiques/​jewels/​jewellery
  2. 2(informal) extremely amusing You should have seen his face—it was priceless!
See the Oxford Advanced American Dictionary entry: priceless