1. to be clear (of a sight, sound, colour, etc.); to be bright; to be vivid; to be crisp
2. to be clear-headed; to be alert; to be on the ball; to be wide awake
3. to look upbeat; to be perky; to be cheerfuloften as 冴えない
4. to master (a skill); to excel at; to cleanly execute
5. to be satisfyingSee also 冴えない, often as 冴えない
6. to become frigid; to become intensely coldoriginal meaning; now somewhat old-fashioned
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