另一个视角
看到forego和forgo马上让人联想for-, fore-（前缀）（工具书多多益善——仅供参考）
for-
for- /fɔː(r)，fə(r)/
pref.
- 表示“离”，“分”：forget, forgive
- 表示“禁止”，“排斥”：forbid, forfend
- 表示“克制”，“忽视”：forbear, forsake
- 表示“极度”,“全部”：forlorn, forspent
- 表示“破坏”，“有害”：fordo
…………
for-
Word Origin
1a prefix meaning “away,” “off,” “to the uttermost,” “extremely,” “wrongly,” or imparting a negative or privative force, occurring in verbs and nouns formed from verbs of Old or Middle English origin, many of which are now obsolete or archaic:
forbid; forbear; forswear; forbearance.