let on片語動詞KK [lɛt ɑn] /lɛt ɑn/發音片語動詞1透露、洩露、說出去口語,多用於否定句Don't let on that we're planning a party for her.別透露我們正在為她籌辦派對的事。2假裝、裝作口語He let on that he hadn't noticed the mistake.他假裝沒有注意到那個錯誤。