Priceless
Invaluable
Synonyms: Of incalculable value/worth, of immeasurable value/worth, beyond price, worth its weight in gold, rare, incomparable, expensive, high-priced, rich, choice, exquisite, prized, cherished, of inestimable value/worth, invaluable, without price, worth a king's ransom, irreplaceable, unparalleled, costly, at a premium, dear, fine, treasured, and precious.
Hilarious
Synonyms: Hilarious, very funny, comical, uproarious, too funny for words, rib-tickling, ridiculous, a hoot, killingly funny, extremely amusing, comic, riotous, screamingly/hysterically funny, side-splitting, absurd, a scream, and killing.
Example Sentences
Her reaction was absolutely priceless today.
The family heirloom is priceless treasure.
Memories from that trip are priceless.
His priceless advice changed my life.
The painting is considered a priceless masterpiece.