嘱托 (zhǔ tuō) means 'to entrust a task or responsibility to someone with verbal instructions', often implying a spoken request with concern. It's close to 嘱咐 (zhǔ fù 'to urge earnestly') but focuses on the act of entrusting a task, while 托付 (tuō fù) is more about handing over a person or responsibility entirely. 委托 (wěi tuō) is more formal and often used for official commissions.