44 entries under plain topic. ×

4
weak(adjective, dull, mild, boring)
3
banal(adjective, dull, weak, mild)
3
bland(adjective, weak, mild, boring)
3
flat(adjective, dull, weak, mild)
3
insipid(adjective, dull, weak, mild)
3
vapid(adjective, dull, weak, flat)
3
watery(adjective, dull, weak, mild)
3
wishy-washy(adjective, dull, weak, mild)
2
flavorless(adjective, dull, weak, mild)
2
mild(adjective, weak, tasteless, puny)
2
sapless(adjective, dull, weak, mild)
2
tasteless(adjective, weak, mild, boring)
1
blah(adjective, dull, weak, mild)
1
dull(adjective, weak, mild, boring)
1
dull as dishwater(expression, adjective, idiom, dull, weak)
1
ho hum(expression, adjective, dull, weak)
1
humdrum(adjective, dull, weak, mild)
1
monotonous(adjective, dull, weak, mild)
1
nerdy(adjective, dull, weak, mild)
1
nothing(adjective, dull, weak, mild)
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APASmart Define. (2015). milk-and-water thesaurus. Retrieved October 1, 2026, from https://smartdefine.org/milk-and-water/thesaurus/synonyms
ChicagoSmart Define. 2015. "milk-and-water thesaurus" https://smartdefine.org/milk-and-water/thesaurus/synonyms (accessed October 1, 2026).
HarvardSmart Define 2015, milk-and-water thesaurus, Smart Define, viewed 1 October, 2026, <https://smartdefine.org/milk-and-water/thesaurus/synonyms>.
MLASmart Define. "milk-and-water thesaurus" 13 April 2015. Web. 1 October 2026. <https://smartdefine.org/milk-and-water/thesaurus/synonyms>