以致于yǐzhìyúTop 35000Meanings1. with the result thatCharacters used以according to致to cause于toExamples1我wǒ的de表兄弟biǎoxiōngdì太过tàiguò沉浸chénjìn于yú学业xuéyè，以致于yǐzhìyú他tā的de朋友péngyou们men唤huàn他tā作zuò书虫shūchóng。My cousin is so steeped in schoolwork that his friends call him bookworm.