begone

1. Tell him to begone!
   叫他走开！
2. Begone, dull care!
   走开吧，无聊的忧虑！

be.gone

v.（动词）
Used chiefly in the imperative to express an order of dismissal.
走开：主要用在祈使句中表达解散的命令

来源：
Middle English begone
中古英语 begone
be [imperative of] ben [to be] * see be
be [] ben的祈使语气动词 [成为] *参见 be
gone [past participle of] gon [to go] * see go
gone [] gon的过去分词 [离开] *参见 go