120 entries under clear topic. ×

1
decontaminated(adjective, pure, healthy, safe)
1
enduring(adjective, set, complete, firm)
1
establishable(adjective, hard, sound, plain)
1
having down pat(expression, adjective, idiom, sound)
1
healthy(adjective, sound, pure, safe)
1
innocent(adjective, pure, healthy, safe)
1
innoxious(adjective, sound, pure, healthy)
1
inoffensive(adjective, sound, pure, healthy)
1
neutralized(adjective, sound, pure, healthy)
1
nonpoisonous(adjective, sound, pure, healthy)
1
nontoxic(adjective, sound, pure, healthy)
1
not dangerous(expression, adjective, sound, pure)
1
on ice(expression, adjective, strong, sound)
1
out-and-out(adjective, complete, flat, total)
1
overt(plain, obvious)
1
pure(adjective, true, healthy, original)
1
rank(adjective, complete, total, definite)
1
risk-free(adjective, sound, pure, healthy)
1
riskless(adjective, sound, pure, healthy)
1
straightforward(flat, total, plain, definite)
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APASmart Define. (2016). certain thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/certain/thesaurus/synonyms
ChicagoSmart Define. 2016. "certain thesaurus" https://smartdefine.org/certain/thesaurus/synonyms (accessed September 21, 2026).
HarvardSmart Define 2016, certain thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/certain/thesaurus/synonyms>.
MLASmart Define. "certain thesaurus" 31 March 2016. Web. 21 September 2026. <https://smartdefine.org/certain/thesaurus/synonyms>