late 14c., overmacchen, "be more than a match for, defeat, excel, outdo, surpass," from over- + match (v.). Burton ("Anatomy of Melancholy," 1621) has it in the sense of "to give in marriage above one's station." Related: Overmatched; overmatching.
overlong
overlook
overlord
overly
overmaster
overmatch
overmuch
overnice
overnight
overpark
overpass