V2 Vocabulary Building Dictionary
Definition: physically and mentally slow, and lacking alertness
Synonyms: tired, sleepy, lazy, sluggish, drowsy, weak, slow, torpid, inactive
Antonyms: energetic, invigorated, lively
Tips: Lethargic is derived from the Greek lethargos, which means "forgetful and idle." A lethargic person may seem forgetful and idle due to a lack of energy. Lethargic is more than being tired; it's being tired and therefore, not alert, dull minded. Your senses are dull and your ability to react both physically and mentally is impaired or hindered because you are tired. Lethargy is the state of being lethargic.
The star player had to be pulled from the game because he seemed too lethargic to help the team. (weak, slow)
He was so lethargic from lack of sleep, it took him two minutes to answer the simple question in class. (sleepy, slow)
Her lethargy caused her to fall asleep during the lecture. (tiredness) noun
I was feeling so lethargic, even after a good night's sleep, that I went to see my doctor to find out what was wrong. (sluggish, drowsy, tired)
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