30 entries under pretty topic. ×

8
straightforward(adjective, clear, free, simple, friendly)
7
apparent(adjective, clear, simple, plain, straightforward)
7
unmistakable(adjective, clear, simple, plain, straightforward)
6
clear(adjective, simple, plain, straightforward, obvious)
6
explicit(adjective, plain)
6
obvious(adjective, clear, simple, plain, straightforward)
6
plain(adjective, clear, free, simple, friendly)
5
evident(adjective, clear, simple, plain, straightforward)
5
self-evident(adjective, plain)
5
self-explanatory(adjective, plain)
4
assured
3
guaranteed
3
indisputable
2
conclusive
2
easy
2
in the bag(expression, adjective, idiom)
2
nailed down
2
ordinary
2
routine
2
simple
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APASmart Define. (2016). open-and-shut thesaurus. Retrieved September 29, 2026, from https://smartdefine.org/open-and-shut/thesaurus/synonyms
ChicagoSmart Define. 2016. "open-and-shut thesaurus" https://smartdefine.org/open-and-shut/thesaurus/synonyms (accessed September 29, 2026).
HarvardSmart Define 2016, open-and-shut thesaurus, Smart Define, viewed 29 September, 2026, <https://smartdefine.org/open-and-shut/thesaurus/synonyms>.
MLASmart Define. "open-and-shut thesaurus" 31 March 2016. Web. 29 September 2026. <https://smartdefine.org/open-and-shut/thesaurus/synonyms>