opp UK /ɒp/US /ɑp/noun 3preposition 1forms 2 noun3 •Any person on unfriendly terms.When I saw her I fled on the spot man, me and her are opps. •(slang) An opponent; an enemy; the opposition.Seeing the opps slumped in the front seats, I went for the duffel bag that was lying on the backseat. — 2016 •Abbreviation of opportunity.The two regular job opps are in Geography and Battle Planning. — 2011 preposition1 •Abbreviation of opposite. formsOPPs · opps