32 entries under gratis topic. ×
| cost-free(adverb, free) | |
| at no charge(expression, idiom, free) | |
| courtesy(adjective, free, complimentary) | |
| honorary(adjective, free, courtesy) | |
| paper(adjective, complimentary) | |
| spontaneous | |
| toll-free(adverb, free) | |
| unasked-for | |
| unpaid(adjective, free, complimentary, unrewarded) | |
| unrecompensed(adjective, complimentary, unrewarded, unremunerated) | |
| voluntary | |
| willing |
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| APA | Smart Define. (2015). free of charge thesaurus. Retrieved September 28, 2026, from https://smartdefine.org/free_of_charge/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "free of charge thesaurus" https://smartdefine.org/free_of_charge/thesaurus/synonyms (accessed September 28, 2026). |
| Harvard | Smart Define 2015, free of charge thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/free_of_charge/thesaurus/synonyms>. |
| MLA | Smart Define. "free of charge thesaurus" 14 April 2015. Web. 28 September 2026. <https://smartdefine.org/free_of_charge/thesaurus/synonyms> |