342 entries under noun topic. ×
| perk(adjective, gain, benefit, informal) | |
| appendage(part, increase, addition, extension) | |
| frill(treat, luxury, extravagance, addition) | |
| non-essential | |
| premium(gain, prize, advantage, share) | |
| subsidiary(adjective, support, increase, lower) | |
| tip(adjective, spare, advantage, reward) | |
| appurtenance(part, addition, extension, accessory) | |
| inessential(adjective, spare, extreme, useless) | |
| perquisite(benefit, prize, stock, reward) | |
| subordinate(adjective, support, spare, inferior) | |
| unessential(adjective, surplus, unnecessary, irrelevant) | |
| duplicate(place, lower, copy, inferior) | |
| extension(part, increase, addition, accessory) | |
| lagniappe(adjective, gain, spare, reserve) | |
| second(adjective, lower, spare, inferior) | |
| surcharge(fee, supplement, tax, appendage) | |
| additive(increase, addition, ingredient, supplement) | |
| backup(adjective, support, lower, copy) | |
| benefit(gain, advantage, privilege, plus) |
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| APA | Smart Define. (2016). extra thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/extra/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "extra thesaurus" https://smartdefine.org/extra/thesaurus/synonyms (accessed September 25, 2026). |
| Harvard | Smart Define 2016, extra thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/extra/thesaurus/synonyms>. |
| MLA | Smart Define. "extra thesaurus" 30 March 2016. Web. 25 September 2026. <https://smartdefine.org/extra/thesaurus/synonyms> |