lethargic

When you feel lethargic, you're sluggish or lacking energy. Being sleepy or hungry can make anyone lethargic.

Being lethargic makes it hard to get anything done: you feel weak and sleepy. Whatever the reason, a lethargic person needs to snap out of it and get some energy, maybe by eating something or by taking a nap. Being lethargic also goes well with watching TV, since that takes almost no energy at all. When you feel lethargic, you don't have any energy to spare.

DEFINITIONS OF: lethargic

1

adj deficient in alertness or activity

“bullfrogs became lethargic with the first cold nights”
Synonyms:
unenrgetic
inactive
not active physically or mentally
dazed, foggy, groggy, logy, stuporous
stunned or confused and slow to react (as from blows or drunkenness or exhaustion)
dreamy, lackadaisical, languid, languorous
lacking spirit or liveliness
listless
lacking zest or vivacity
Antonyms:
energetic
possessing or exerting or displaying energy
active
characterized by energetic activity
lively
full of life and energy
dynamic, dynamical
characterized by action or forcefulness or force of personality
physical
characterized by energetic bodily activity
alert, brisk, lively, merry, rattling, snappy, spanking, zippy
quick and energetic
canty
lively and brisk
driving
acting with vigor
high-energy
providing a relatively large amount of energy upon undergoing a chemical reaction
indefatigable, tireless, unflagging, unwearying
showing sustained enthusiastic action with unflagging vitality
strenuous
characterized by or performed with much energy or force
vigorous
characterized by forceful and energetic action or activity
enterprising
marked by imagination, initiative, and readiness to undertake new projects
spirited
displaying animation, vigor, or liveliness
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