12 entries under energetic topic. ×

11
active(adjective, fixed, afraid, inoperative)
8
lively(adjective, dull)
8
busy
6
alert(adjective, dull, careless, indifferent)
6
vigorous(adjective, dull, weak, powerful)
6
vivacious
5
animated(adjective, sluggish)
5
vital(adjective, inactive)
3
strenuous(adjective, zealous)
2
lusty(adjective, weak, healthy)
1
hearty(adjective, enthusiastic, aloof, unhealthy)
0
live(adjective, vigorous)
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APASmart Define. (2016). lethargic thesaurus. Retrieved September 29, 2026, from https://smartdefine.org/lethargic/thesaurus/antonyms
ChicagoSmart Define. 2016. "lethargic thesaurus" https://smartdefine.org/lethargic/thesaurus/antonyms (accessed September 29, 2026).
HarvardSmart Define 2016, lethargic thesaurus, Smart Define, viewed 29 September, 2026, <https://smartdefine.org/lethargic/thesaurus/antonyms>.
MLASmart Define. "lethargic thesaurus" 4 January 2016. Web. 29 September 2026. <https://smartdefine.org/lethargic/thesaurus/antonyms>