competitive UK /kəmˈpɛt.ɪ.tɪv/US /kəmˈpɛt.ə.tɪv/ adjective5 •Of or pertaining to competition. •Relating to the inhibition of the effects of a chemical substance by another substance competing with it for binding or bonding. •Capable of competing successfully. •Cheap, especially used of quality products. •Inclined to compete. formsmore competitive · most competitive