120 entries under plain topic. ×

1
walkover(adjective, quiet, clear, smooth, easy)
1
workaday(adjective, simple, flat, pure)
1
yawn(adjective, simple, flat, ordinary)
1
zero(adjective, simple, flat, ordinary)
0
lusterless(adjective, simple, ordinary, straightforward)
0
bland(adjective, dull, ordinary, boring)
0
cinch(adjective, quiet, clear, smooth, easy)
0
easy as pie(expression, adjective, idiom, quiet, clear)
0
effortless(adjective, quiet, clear, smooth, easy)
0
facile(adjective, quiet, clear, smooth, easy)
0
manageable(adjective, quiet, clear, smooth, easy)
0
no problem(expression, adjective, quiet, clear, smooth)
0
no sweat(expression, adjective, quiet, clear, smooth)
0
not difficult(expression, adjective, quiet, clear, smooth)
0
picnic(adjective, quiet, clear, smooth, easy)
0
piece of cake(expression, adjective, idiom, quiet, clear)
0
simple as ABC(expression, adjective, idiom, quiet, clear)
0
snap(adjective, quiet, clear, smooth, easy)
0
undisguised(adjective, straightforward, straight, candid)
0
untroublesome(adjective, quiet, clear, smooth, easy)
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APASmart Define. (2016). clean thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/clean/thesaurus/synonyms
ChicagoSmart Define. 2016. "clean thesaurus" https://smartdefine.org/clean/thesaurus/synonyms (accessed September 23, 2026).
HarvardSmart Define 2016, clean thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/clean/thesaurus/synonyms>.
MLASmart Define. "clean thesaurus" 29 March 2016. Web. 23 September 2026. <https://smartdefine.org/clean/thesaurus/synonyms>