83 entries under plain topic. ×

38
clear(adjective, clear, sound, touch, reasonable)
24
intelligible(adjective, quiet, clear, simple, easy)
24
understandable(adjective, clear, simple, sharp)
20
distinct(adjective, clear, sharp, bright)
16
limpid(adjective, clear, touch, fine, bright)
16
obvious(adjective, clear, sound, simple, reasonable)
16
unambiguous(adjective, clear, simple, sharp)
13
pellucid(adjective, clear, touch, simple, pleasant)
12
bright(adjective, clear, pleasant, bright, clean)
9
unequivocal(adjective, clear, simple, sharp)
8
clear-cut(adjective, clear, sharp, definite)
8
direct(adjective, clear, obvious, articulate)
8
straightforward(adjective, clear, simple, easy, sharp)
7
definite(adjective, clear, simple, sharp, bright)
6
light(adjective, quiet, clear, smooth, easy)
4
express(verb, clear, simple, sharp)
4
patent(adjective, clear, simple, sharp)
4
unclouded(adjective, clear, simple, pleasant, bright)
3
exact(adjective, clear, obvious, perspicuity)
3
open(adjective, clear, straightforward, distinct)
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APASmart Define. (2016). lucid thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/lucid/thesaurus/synonyms
ChicagoSmart Define. 2016. "lucid thesaurus" https://smartdefine.org/lucid/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2016, lucid thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/lucid/thesaurus/synonyms>.
MLASmart Define. "lucid thesaurus" 31 March 2016. Web. 24 September 2026. <https://smartdefine.org/lucid/thesaurus/synonyms>