Synonyms|1kAntonyms|253|Broader|5Narrower|1Related|546

58 entries under heavy topic. ×

1
irksome(adjective, tough, severe, rough, difficult)
1
labored(adjective, hard, tough, rough, difficult)
1
murder(adjective, hard, tough, severe, rough)
1
scabrous(adjective, tough, rough, difficult)
1
serious(adjective, strong, hard, tough, severe)
1
slavish(adjective, tough, rough, difficult)
1
sticky(adjective, tough, rough, difficult)
1
terrible(adjective, tough, rough, difficult, intense)
1
tiring(adjective, hard, tough, severe, rough)
1
toilful(adjective, tough, rough, difficult)
1
uphill battle(expression, adjective, tough, rough, difficult)
1
wearing(adjective, tough, rough, difficult)
1
wearying(adjective, tough, rough, difficult)
0
bothersome(adjective, tough, rough, difficult)
0
galling(adjective, severe, harsh, unpleasant)
0
herculean(adjective, tough, rough, difficult)
0
vexatious(adjective, severe, harsh, unpleasant)
0
wearisome(adjective, tough, rough, difficult)
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APASmart Define. (2016). rigorous thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/rigorous/thesaurus/synonyms
ChicagoSmart Define. 2016. "rigorous thesaurus" https://smartdefine.org/rigorous/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2016, rigorous thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/rigorous/thesaurus/synonyms>.
MLASmart Define. "rigorous thesaurus" 26 February 2016. Web. 24 September 2026. <https://smartdefine.org/rigorous/thesaurus/synonyms>