party-hearty noun 1party hearty verb 1forms 4 noun1 •One who parties heavily.In short, “Cruise” is bro-country: music by and of the tatted, gym-toned, party-hearty young American white dude. — 2013 party hearty verb1 •(slang) To engage in unrestrained merriment. formspartied hearty · partying hearty · parties hearty · party-hearties