| less important | |
| unimportant(adjective, important, substantial) | |
| minor(adjective, superior, big, small, insignificant) | |
| insignificant(adjective, important, substantial) | |
| petty(adjective, insignificant, trivial) | |
| trivial(adjective, important, substantial, unimportant, serious) | |
| negligible(adjective, insignificant) | |
| inconsequential(adjective, dull, important, insignificant) | |
| nonsignificant | |
| lightweight | |
| paltry(adjective, poor, big, substantial, worthless) | |
| powerless | |
| meaningless(adjective, reasonable, use, value, unimportant) | |
| slight(adjective, important, small, insignificant, large) | |
| inconsiderable | |
| measly | |
| irrelevant | |
| little(adjective, dull) | |
| minute | |
| nominal(adjective, insignificant) |
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| APA | Smart Define. (2016). significant thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/significant/thesaurus/antonyms |
| Chicago | Smart Define. 2016. "significant thesaurus" https://smartdefine.org/significant/thesaurus/antonyms (accessed September 23, 2026). |
| Harvard | Smart Define 2016, significant thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/significant/thesaurus/antonyms>. |
| MLA | Smart Define. "significant thesaurus" 4 March 2016. Web. 23 September 2026. <https://smartdefine.org/significant/thesaurus/antonyms> |