Easy as in sleeping car A term used to describe someone or something that is not expected to succeed but surprises everyone by doing well, similar to the concept of a dark horse. Clear All
2 Example Sentences Showcasing the Meaning of 'Sleeper'
The student's seemingly simple invention turned out to be a sleeper in the science fair, impressing judges with its creativity.
The explorer carried a compact sleeper tent for camping in the wilderness during the month-long expedition.
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