adjective
- Costing nothing.
- usage: "complimentary tickets"; "free admission"
- synonyms: complimentary, free, gratis, gratuitous
WordNet 3.0 © 2006 by Princeton University
| APA | WordNet. (2010). costless. Retrieved September 20, 2026, from http://smartdefine.org/costless/definitions/1171524 |
| Chicago | WordNet. 2010. "costless" http://smartdefine.org/costless/definitions/1171524 (accessed September 20, 2026). |
| Harvard | WordNet 2010, costless, Smart Define, viewed 20 September, 2026, <http://smartdefine.org/costless/definitions/1171524>. |
| MLA | WordNet. "costless" 23 October 2010. Web. 20 September 2026. <http://smartdefine.org/costless/definitions/1171524> |