| inappropriate | |
| inconvenient(inopportune, untimely) | |
| overhasty(adjective, careless, thoughtless, impulsive, rash) | |
| underdeveloped(adjective, inexperienced, young, childish, undeveloped) | |
| late(untimely, untimeliness) | |
| embryonic(adjective, earlier) | |
| half-baked(adjective, impulsive, rash, early) | |
| improper | |
| impulsive(careless, thoughtless, reckless, hasty) | |
| inauspicious(inopportune, untimely) | |
| inexpedient(inopportune, untimely) | |
| infelicitous(inopportune, untimely) | |
| mistimed | |
| oversoon(adjective, quick, improper, inappropriate, unfortunate) | |
| rash(adjective, careless, impulsive, reckless, hasty) | |
| raw(adjective, informal, first, inexperienced, primary) | |
| too early | |
| unpunctual(inopportune, untimely, untimeliness) | |
| wrong | |
| abortive(adjective, earlier) |
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| APA | Smart Define. (2015). premature thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/premature/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "premature thesaurus" https://smartdefine.org/premature/thesaurus/synonyms (accessed September 25, 2026). |
| Harvard | Smart Define 2015, premature thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/premature/thesaurus/synonyms>. |
| MLA | Smart Define. "premature thesaurus" 13 April 2015. Web. 25 September 2026. <https://smartdefine.org/premature/thesaurus/synonyms> |