1) A question such as "for real", asking for truth or reassurance
2) An acknowledgment
30 A universal word for any and every situation
1)A: I got an A the semester
2)A: Dinner is ready
3)Either a friend or a person of whom you despise walks by, you say "OH!?" very loudly OR some idiot drops a box, you hear and/or see it and say "Oh?"