be- Definition

be-
prefix

1. Signifying all over or all around; thoroughly or completely.

Example: beset
Example: befuddle
Example: bedeck
2. Considering something or someone as, or causing it or them to be or feel, a specified thing.

Example: befriend
Example: belittle
Example: benumb
3. Having, covered with or affected by, a specified thing.

Example: bejewelled
Example: beribboned
Example: bedevilled
4. Affecting someone or something by a particular action.

Example: bereave
Example: betroth
Example: bewail

Etymology: 16c, originally meaning ‘about': from Anglo-Saxon bi- by.