50 entries under plain topic. ×

3
everyday(adjective, dull, simple, ordinary)
3
literal(adjective, simple, flat, clean)
3
nerdy(adjective, dull, feeling, tedious, boredom)
3
prose(adjective, simple, flat, clean)
3
prosy(adjective, dull, weak, simple, flat)
2
dull as dishwater(expression, adjective, idiom, dull, weak)
2
factual(adjective, simple, clean, ordinary)
2
garden-variety(adjective, dull, simple, flat, clean)
2
homely(adjective, dull, ordinary, tacky)
2
lusterless(adjective, dull, simple, flat, clean)
<123>
10 years ago|38k views|share |citing 
APASmart Define. (2016). boring thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/boring/thesaurus/synonyms
ChicagoSmart Define. 2016. "boring thesaurus" https://smartdefine.org/boring/thesaurus/synonyms (accessed September 21, 2026).
HarvardSmart Define 2016, boring thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/boring/thesaurus/synonyms>.
MLASmart Define. "boring thesaurus" 30 March 2016. Web. 21 September 2026. <https://smartdefine.org/boring/thesaurus/synonyms>