192 entries under boring topic. ×

6
long-drawn-out(adjective, dull, late, dreary)
6
wishy-washy(adjective, dull, weak, plain, mild)
5
arduous(adjective, dull, difficult, tender)
5
deadly(adjective, dull, dry, dreary)
5
difficult(adjective, dull, tender, raw)
5
hackneyed(adjective, dull, simple, flat, plain)
5
hard(adjective, dull, difficult, tender)
5
prolonged(adjective, dull, slow, late)
5
repetitive(adjective, dull, flat, ordinary, dry)
5
spiritless(adjective, dull, weak, stupid)
5
tired(adjective, dull, flat, ordinary, dry)
5
unending(adjective, rambling)
4
characterless(adjective, dull, flat, stupid)
4
dispiriting(adjective, dull, gloomy, miserable)
4
dragging(adjective, dull, slow, dreary)
4
dusty(adjective, dull, simple, dreary)
4
exasperating(adjective, dull, irritating, annoying)
4
jading(adjective, dull, irritating, exasperating)
4
lackluster(adjective, dull, simple, flat, plain)
4
long(adjective, slow, rambling, extended)
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APASmart Define. (2015). tedious thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/tedious/thesaurus/synonyms
ChicagoSmart Define. 2015. "tedious thesaurus" https://smartdefine.org/tedious/thesaurus/synonyms (accessed September 21, 2026).
HarvardSmart Define 2015, tedious thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/tedious/thesaurus/synonyms>.
MLASmart Define. "tedious thesaurus" 10 April 2015. Web. 21 September 2026. <https://smartdefine.org/tedious/thesaurus/synonyms>