out-
- situated at or coming from a point away, outside, external: outbuilding, outpatient
- going away or forth, outward: outbound
- better, greater, or more than: used to form verbs from verbs, adjectives, or certain nouns naming persons, actors, or agents [outdo, outsell, outsmart, outgeneral, out-Herod]: a frequent usage in such self-explanatory terms as the following:
See out- in American Heritage Dictionary 4
prefix In a way that surpasses, exceeds, or goes beyond: outdistance.