brag

(noun) an instance of boastful talk. Synonyms: bragging, crow, crowing, vaporing, line-shooting, gasconade. Examples: "His brag is worse than his fight." "Whenever he won we were exposed to his gasconade."

(verb) show off. Synonyms: boast, tout, swash, shoot a line, gas, blow, bluster, vaunt, gasconade.

(adj) exceptionally good. Synonyms: boss. Examples: "A boss hand at carpentry." "His brag cornfield."