110 entries under dull topic. ×

6
strenuous(adjective, difficult, harsh, cruel)
6
uncomfortable(adjective, unhappy, dark, painful)
5
annoying(adjective, boring, painful, tedious)
5
austere(adjective, hard, tough, severe)
5
dreary(adjective, obscure, warm, sad)
5
somber(adjective, severe, obscure, harsh)
5
wearing(adjective, hard, tough, difficult)
5
wearisome(adjective, difficult, boring, tedious)
5
wearying(adjective, difficult, boring, tired)
4
discouraging(adjective, dark, gloomy, miserable)
4
disheartening(adjective, dark, gloomy, miserable)
4
dispiriting(adjective, obscure, unhappy, dark)
4
exhausting(adjective, hard, tough, difficult)
4
funereal(adjective, obscure, harsh, unhappy)
4
grim(adjective, tough, severe, firm)
4
overcast(adjective, dark, gloomy, miserable)
4
vexatious(adjective, difficult, boring, tired)
3
cheerless(adjective, sad, harsh, unhappy)
3
depressive(adjective, sad, dark, boring)
3
disagreeable(adjective, gloomy, miserable, painful)
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APASmart Define. (2015). oppressive thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/oppressive/thesaurus/synonyms
ChicagoSmart Define. 2015. "oppressive thesaurus" https://smartdefine.org/oppressive/thesaurus/synonyms (accessed September 25, 2026).
HarvardSmart Define 2015, oppressive thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/oppressive/thesaurus/synonyms>.
MLASmart Define. "oppressive thesaurus" 10 April 2015. Web. 25 September 2026. <https://smartdefine.org/oppressive/thesaurus/synonyms>