7 entries under difficult topic. ×

13
exhausting(adjective, annoying, verb, dull)
11
draining(adjective, verb, demanding, strenuous)
8
tiring(adjective, annoying, exhausting, verb, dull)
6
wearing(adjective, verb, tedious, demanding)
4
sapping(verb, adjective, tedious, demanding)
2
trying(demanding, strenuous, exhausting)
0
taxing(demanding, strenuous, trying, exhausting)
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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>