[in sing.](informal)a commotion or fuss (非正式)忙乱;喧闹;骚扰;骚动 he made a great to-do about fetching a cup. 取个杯子他就大惊小怪的。
语源
late 16th cent.: from to do as in much to do, originally meaning ‘much needing to be done’ but later interpreted as the adjective much and a noun; compare with ado