prefix see: by on ; around ; over , to a great or greater degree ; thoroughly , excessively ; ostentatiously, about ; to ; at ; upon ; against ; across , make ; cause to be ; treat as , call or dub especially excessively , affect, afflict, treat, provide, or cover with especially excessively
BE-
Meaning of BE- in English
Merriam Webster. Explanatory English dictionary Merriam Webster. Толковый словарь английского языка Мерриам-Уэбстер. 2012