Commonly mistaken as the word "unreal". Often used to describe a remarkable feat or a boneheaded play. Other words related to this that are often confused; onbelievable (unbelievable), ondo (undo), ontarp (untarp), onenthusiastic (unenthusiastic), onused (unused), onhittable (unhittable)
"We suck, this is the worst team i've ever seen, we can't make a single play in the field! this is onreal"