gross out noun 1verb 1forms 5 noun1 •(US, informal) Something which sickens, causes distress, or appalls by reason of being disgusting, gory, or repulsive.Notwithstanding that episode, this film is refreshingly low on scatological gags and other gross-out humor, preferring all-purpose bad jokes to bathroom ones. — 1993 verb1 •(informal) To sicken or distress (someone) by being disgusting, gory, or lewd.Lisa likes him clean-shaven. "You know, when there's things crawling out of your beard or whenever you've got food left from lunch or dinner, I don't know, that just kind of grosses me out," she says. — 2013 formsgrossed out · grossing out · grosses out · gross outs · gross-outs