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Webster 1828 Edition

pp.

Emptied of water or other liquor by a gradual discharge, flowing or dropping; exhausted; drawn off.

drained ‎(comparative more drained, superlative most drained)

Lacking motivation and energy; very tired; knackered.
I felt so drained after the 3 hours exam, that I wanted to sleep for the next week
Of a battery, empty of charge; discharged.

Lacking motivation and energy; very tired; knackered

empty of charge; discharged

drained