Synonyms|140Antonyms|32|Broader|0Narrower|0Related|72
1
seriously(vigorously, earnestly, actively, hastily, carefully)
1
speedily(vigorously, earnestly, actively, hastily, carefully)
1
spiritedly(adverb, vigorously, earnestly, actively, hastily)
1
stiffly(adverb, tenaciously)
1
stonily(adverb, tenaciously)
1
straightly(adverb, continuously)
1
strongly(adverb, tenaciously)
1
studiously(adverb, vigorously, earnestly, actively, hastily)
1
undauntedly(adverb, tenaciously)
1
undyingly(adverb, continuously)
1
unendingly(adverb, continuously)
1
uniformly(adverb, continuously)
1
uninterruptedly(adverb, continuously)
1
unweariedly(vigorously, earnestly, actively, hastily, carefully)
1
valiantly(adverb, resolutely)
1
vigilantly(vigorously, earnestly, actively, hastily, carefully)
1
vivaciously(vigorously, earnestly, actively, hastily, carefully)
1
wearilessly
1
zealously(adverb, vigorously, earnestly, actively, hastily)
0
unvaryingly(adverb, continuously)
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ChicagoSmart Define. 2016. "indefatigably thesaurus" https://smartdefine.org/indefatigably/thesaurus/synonyms (accessed September 25, 2026).
HarvardSmart Define 2016, indefatigably thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/indefatigably/thesaurus/synonyms>.
MLASmart Define. "indefatigably thesaurus" 24 March 2016. Web. 25 September 2026. <https://smartdefine.org/indefatigably/thesaurus/synonyms>