forgive (him) his debt
彼の借金を棒引きする
forgive a sin [an insult]
罪[無礼]を許す[許してやる]
Forgive me for keeping you waiting.
お待たせしてすみません(◆Forgive my keeping you waiting. ともいえる)
Fork it over to me.
それをよこせ
forked lightning
叉さ状電光
form (up) into [in] a line
一列になる
form a cabinet
組閣する
form a close [lifelong] friendship
親密な[生涯の]交友関係を築く
form [make, give] a conjecture on ...
…に推測を下す
form a conspiracy against a person's life
人の殺害を共謀する