Synonym: insomniac, lidless, watchful. Similar words: sleep, sleepy, asleep, sleeping, sleepily, go to sleep, oversleep, fall asleep. Meaning: ['slɪːplɪs] 
adj. 1. experiencing or accompanied by sleeplessness 2. without having the eyes closed or covered by the eyelids.
adj. 1. experiencing or accompanied by sleeplessness 2. without having the eyes closed or covered by the eyelids. 
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1. Adrian spent a sleepless night wondering what to do.
2. She spent a sleepless night.
3. I have sleepless nights worrying about her.
4. I've had a few sleepless nights recently.
5. I've spent so many sleepless nights worrying about him.
6. The boy's misconduct cost his mother many sleepless nights.
7. She looked haggard after a sleepless night.
8. A sleepless night had added to her pallor.
9. A sleepless baby can seem to bring little reward.
10. She lay sleepless for hours,[sentencedict.com] worrying.
11. Financial worries cost her many sleepless nights.
12. Her irresponsible behaviour cost her father many sleepless nights.
13. She lay sleepless until dawn.
14. Alone and sleepless, she stared miserably up at the ceiling.
15. She looked pale and drawn after weeks of sleepless nights.
16. He is sleepless, crying out night and day.
17. After a sleepless night Stavrogin sets forth.
18. Her sleepless, restless night seemed a long way off.
19. Sheila spent many sleepless nights figuring out how to deliver for her first major customer.
20. After several weeks of sleepless nights, Walter sought professional help.
21. I pictured nocturnal gamblers crouching over their cards, sleepless lovers writing letters, nurses sitting by the beds of invalids.
22. The four travellers passed a sleepless night, each thinking of the gift Oz had promised to bestow on him.
23. A sleepless night had added to her pallor and the haunted look in her eyes.
24. Residents of Albatross Way have been suffering sleepless nights, plagued by rogue drivers racing their cars behind Presto supermarket.
25. For several sleepless nights, Charity had been engaged in what she would call tiny wrestling with herself.
26. The patient's dangerous condition cost the doctors and nurses many a sleepless night.
27. His identification with the hero of the book made him sleepless.
28. The train stopped frequently at lonely little stations,which resulted in a sleepless night.
29. She felt dazed and was drifting through life never feeling well, sleepless, anxious and just not coping.
30. He lives with them every day, and sweats them out on many a sleepless night.
More similar words: sleep, sleepy, asleep, sleeping, sleepily, go to sleep, oversleep, fall asleep, steeple, sleeping bag, sleeping partner, let sleeping dogs lie, hapless, helpless, helplessly, sleek, sleeve, replete, deplete, depleted, depletion, repletion, replenish, measles, carelessness, uselessness, tactlessness, selflessness, limitlessness, faithlessness.