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Lethargic vs Somnolent - What's the difference?

lethargic | somnolent |

As adjectives the difference between lethargic and somnolent

is that lethargic is sluggish, slow while somnolent is drowsy or sleepy.

lethargic

English

Alternative forms

* lethargick (obsolete)

Adjective

(en adjective)
  • sluggish, slow
  • * {{quote-book
    • , year=1960 , author= , title=(Jeeves in the Offing) , section=chapter VII , passage=[That cat] hasn't caught a mouse since he was a slip of a kitten. Except when eating, he does nothing but sleep. Lethargic is the word that springs to the lips. If you cast an eye on him, you will see that he's asleep now.}}
  • indifferent, apathetic

    • Synonyms

    * torpid * lazy * unmoving

    Related terms

    * alethic, alethiology, philalethia * lethargy * Lethe

    somnolent

    English

    Adjective

    (en adjective)
  • Drowsy or sleepy.
  • (dated) Causing literal or figurative sleepiness; soporific.