a prefix, originally the same word as by;.
2. be- ·- to intensify the meaning; as, bespatter, bestir.
3. be- ·- to render an intransitive verb transitive; as, befall (to fall upon); bespeak (to speak for).
4. be- ·- to make the action of a verb particular or definite; as, beget (to get as offspring); beset (to set around).