- opposition research: She claims she never ordered oppo on the candidates.
- an opponent or opponents; the opposition: It's essential to get to know your oppo.
- opposite (defs. 6, 7): I don’t know why she told you that when I really said just the oppo.In this context, "sad" is the oppo of "fortunate."
- to hit the ball uncharacteristically into the opposite field, which for a right-handed batter means hitting the ball into right field and for a left-handed batter means hitting the ball into left field: The infield was expecting a shot between first and second, but the left-handed Lomak went oppo and drove one right through the hole near third base.
