Synonyms|511Antonyms|235|Broader|11Narrower|5Related|1.2k
1
kinetic
1
living(adjective, dead)
1
mettlesome
1
pert
1
physical
1
racy
1
rattling
1
robust(weak, small)
1
self-made
1
spanking
1
speak fast(adjective, dull, slow, sluggish, lazy)
1
springy
1
spunky
1
unflagging
1
unwearying
1
wakeful
1
working
1
zealous(adjective, cool, cold, enthusiastic)
1
zestful
0
active voice
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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>