LETH'ARGY, noun [Latin lethargia; Gr. oblivion and idle.]
1. Preternatural sleepiness; morbid drowsiness; continued or profound sleep, from which a person can scarcely be awaked, and if awaked, remains stupid.
2. Dullness; inaction; inattention.
Europe lay them under a deep lethargy
LETH'ARGY, verb transitive To make lethargic or dull.