Synonyms|511Antonyms|235|Broader|11Narrower|5Related|1.2k
2
driving
2
dynamic
2
frisky
2
jaunty(adjective, lively)
2
merry
2
peppy(adjective, lively, vigorous)
2
spirited(adjective, dull, light, weak)
2
animal
2
buoyant
2
diligent(adjective, persevering)
2
indefatigable
2
industrious(adjective, hardworking)
2
keen(adjective, calm, indifferent)
2
lusty(adjective, weak, energetic, healthy)
2
self-motivated
2
tireless
1
snappy
1
agile
1
agitated
1
alive
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APASmart Define. (2016). lethargic thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/lethargic/thesaurus/antonyms
ChicagoSmart Define. 2016. "lethargic thesaurus" https://smartdefine.org/lethargic/thesaurus/antonyms (accessed September 26, 2026).
HarvardSmart Define 2016, lethargic thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/lethargic/thesaurus/antonyms>.
MLASmart Define. "lethargic thesaurus" 4 January 2016. Web. 26 September 2026. <https://smartdefine.org/lethargic/thesaurus/antonyms>