■ prefix forming verbs:
1》 all over; all round: bespatter.
↘thoroughly; excessively: bewilder.
2》 (added to intransitive verbs and to adjectives and nouns) expressing transitive action: bemoan | befriend.
3》 (added to nouns) affect with: befog.
↘(added to adjectives) cause to be: befoul.
4》 (forming adjectives ending in -ed ) having; covered with: bejewelled.
Origin
OE, weak form of bī 'by'.