60 entries under plain topic. ×

7
platitudinous(adjective, dull, set, simple, flat)
5
blah(adjective, dull, simple, informal)
5
garden-variety(adjective, dull, simple, clean)
5
prose(adjective, simple, clean, ordinary)
5
vapid(adjective, dull, set, simple, flat)
4
ho-hum(adjective, dull, simple, clean)
4
no great shakes(expression, adjective, idiom, dull)
4
normal(adjective, simple, ordinary, usual)
4
routine(adjective, dull, set, simple, moderate)
3
drab(adjective, dull, simple, excite, clean)
3
uneventful(adjective, dull, simple, clean)
2
fair(adjective, dull, simple, inferior)
2
indifferent(adjective, dull, simple, inferior)
2
lackluster(adjective, dull, simple, excite, clean)
2
lowly(adjective, simple, clean, common)
2
lusterless(adjective, dull, simple, excite, clean)
2
modest(simple, indifferent, ordinary, humble)
2
nothing(adjective, dull, simple, clean)
2
plebeian(adjective, mean, simple, rough, poor)
2
square(adjective, dull, simple, moderate, clean)
10 years ago|13k views|share |citing 
APASmart Define. (2016). pedestrian thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/pedestrian/thesaurus/synonyms
ChicagoSmart Define. 2016. "pedestrian thesaurus" https://smartdefine.org/pedestrian/thesaurus/synonyms (accessed September 26, 2026).
HarvardSmart Define 2016, pedestrian thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/pedestrian/thesaurus/synonyms>.
MLASmart Define. "pedestrian thesaurus" 23 March 2016. Web. 26 September 2026. <https://smartdefine.org/pedestrian/thesaurus/synonyms>