以至于 yǐzhìyú HSK7 to the extent Definitions Defs Origin Strokes Stroke Words Sentences Sents Showing: to the extent All meanings 2 yǐzhìyú 2 to the extent 1up to 1 1 sentence for 以至于 (yǐzhìyú — to the extent) 他工作太忙了,以至于忘了吃饭。 tā gōngzuò tài máng le, yǐzhìyú wàng le chīfàn. He was so busy with work that he forgot to eat. Source: Dong Chinese Dictionary