213 entries under adjective topic. ×
| formal(proper, ordinary, usual, normal) | |
| authentic(honest, true, straight, definite) | |
| authoritative(good, sound, correct, right) | |
| established(sound, proper, customary, accepted) | |
| authorized(fair, government, valid, legal) | |
| sanctioned(sound, proper, true, accepted) | |
| executive(noun, person, authority, head) | |
| legitimate(sound, right, proper, straight) | |
| proper(sound, customary, accepted, traditional) | |
| standard(true, regular, reliable, approved) | |
| endorsed(accepted, legal, legitimate, permitted) | |
| true(sound, honest, proper, straight) | |
| valid(right, honest, true, straight) | |
| legal(good, sound, correct, right) | |
| approved(sound, proper, accepted, traditional) | |
| orthodox(correct, fair, proper, truth) | |
| recognized(sound, correct, right, proper) | |
| absolute(honest, certain, true, straight) | |
| bona fide(expression, honest, proper, genuine) | |
| regular(correct, exact, proper, common) |
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| APA | Smart Define. (2015). official thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/official/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "official thesaurus" https://smartdefine.org/official/thesaurus/synonyms (accessed September 23, 2026). |
| Harvard | Smart Define 2015, official thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/official/thesaurus/synonyms>. |
| MLA | Smart Define. "official thesaurus" 13 April 2015. Web. 23 September 2026. <https://smartdefine.org/official/thesaurus/synonyms> |