17
unsurprising
13
exhausting(adjective, annoying, verb, dull, difficult)
13
fatiguing(adjective, annoying, exhausting, verb, dull)
11
draining(adjective, verb, difficult, demanding, strenuous)
10
debilitating(adjective, verb, trying, exhausting)
9
enfeebling(adjective, verb)
8
tiring(adjective, annoying, exhausting, verb, dull)
8
weakening(noun, adjective)
6
debilitative
6
wearing(adjective, verb, difficult, tedious, demanding)
6
wearying(adjective, dull, boring, dreary, trying)
4
sapping(verb, adjective, difficult, tedious, demanding)
3
tedious(adjective, dull, monotonous)
2
emasculating
2
enervate
2
enervated
2
flagging(verb, adjective, fatiguing)
2
grueling(trying, exhausting)
2
killing
2
toilsome
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APASmart Define. (2015). enervating thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/enervating/thesaurus/synonyms
ChicagoSmart Define. 2015. "enervating thesaurus" https://smartdefine.org/enervating/thesaurus/synonyms (accessed September 20, 2026).
HarvardSmart Define 2015, enervating thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/enervating/thesaurus/synonyms>.
MLASmart Define. "enervating thesaurus" 10 April 2015. Web. 20 September 2026. <https://smartdefine.org/enervating/thesaurus/synonyms>