noun
- The time of life between 30 and 40.
- synonyms: thirties, mid-thirties
WordNet 3.0 © 2006 by Princeton University
| APA | WordNet. (2010). thirty-something. Retrieved September 21, 2026, from http://smartdefine.org/thirty-something/definitions/1315983 |
| Chicago | WordNet. 2010. "thirty-something" http://smartdefine.org/thirty-something/definitions/1315983 (accessed September 21, 2026). |
| Harvard | WordNet 2010, thirty-something, Smart Define, viewed 21 September, 2026, <http://smartdefine.org/thirty-something/definitions/1315983>. |
| MLA | WordNet. "thirty-something" 23 October 2010. Web. 21 September 2026. <http://smartdefine.org/thirty-something/definitions/1315983> |