Go to sleep Definition 1 of 3Pro Tip 1/3Common Expression Used in daily conversations to express the act of getting rest at night. I'm exhausted; I'm going to sleep now. Pro Tip 2/3Time Reference Can specify when you plan to rest, using 'early' or 'late' to show habit or intention. On weekends, I usually go to sleep late. Pro Tip 3/3Polite Suggestion Use it to suggest it's time for someone, especially a child, to rest. You have school tomorrow, so you should go to sleep now.