40 entries under plain topic. ×

3
frightful(adjective, nasty, awful, ugly)
3
unseemly(adjective, unpleasant, awful, improper)
2
beastly(adjective, nasty, awful, ugly)
2
deformed(adjective, nasty, awful, ugly)
2
drab(adjective, dull, unpleasant, common)
2
dull(adjective, unpleasant, common, disgusting)
2
loathsome(adjective, offensive, awful, revolting)
2
misshapen(adjective, unpleasant, awful, ugly)
2
not much to look at(expression, adjective, idiom, awful)
2
ordinary(adjective, common, usual, objectionable)
2
repelling(adjective, nasty, awful, ugly)
1
animal(adjective, unpleasant, awful, ugly)
1
appalling(adjective, unpleasant, awful, ugly)
1
bad-looking(adjective, nasty, awful, ugly)
1
grisly(adjective, unpleasant, awful, ugly)
1
hard-featured(adjective, unpleasant, awful, ugly)
1
plain-featured(adjective, ordinary, objectionable)
0
hard on the eyes(expression, adjective, idiom, ordinary)
0
mousy
0
not beautiful(expression, adjective, ordinary, objectionable)
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APASmart Define. (2016). unattractive thesaurus. Retrieved September 28, 2026, from https://smartdefine.org/unattractive/thesaurus/synonyms
ChicagoSmart Define. 2016. "unattractive thesaurus" https://smartdefine.org/unattractive/thesaurus/synonyms (accessed September 28, 2026).
HarvardSmart Define 2016, unattractive thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/unattractive/thesaurus/synonyms>.
MLASmart Define. "unattractive thesaurus" 29 March 2016. Web. 28 September 2026. <https://smartdefine.org/unattractive/thesaurus/synonyms>