- Definitions|0
- Thesaurus|499
- Abbreviations|0
21 entries under regress topic. ×
| old-fashioned(adjective, feature, characteristic, state, past) | |
| outdated(adjective, feature, characteristic, state, past) | |
| obsolete(adjective, feature, characteristic, state, past) | |
| archaic(adjective, feature, characteristic, state, past) | |
| outmoded(adjective, feature, characteristic, state, past) | |
| antediluvian(adjective, past) | |
| antiquated(adjective, past) | |
| behind the times(expression, past) | |
| bygone(adjective, past) | |
| crusty(adjective, past) | |
| last year's(expression, past) | |
| old-fangled(adjective, past) | |
| olde worlde(expression, past) | |
| out of date(expression, past) | |
| out of fashion(expression, past) | |
| out of style(expression, past) | |
| prehistoric(adjective, past) | |
| superseded(adjective, past) | |
| unfashionable(adjective, past) | |
| unpopular(adjective, past) |
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| APA | Smart Define. (1970). future-proof thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/future-proof/thesaurus/antonyms |
| Chicago | Smart Define. 1970. "future-proof thesaurus" https://smartdefine.org/future-proof/thesaurus/antonyms (accessed September 25, 2026). |
| Harvard | Smart Define 1970, future-proof thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/future-proof/thesaurus/antonyms>. |
| MLA | Smart Define. "future-proof thesaurus" 1 January 1970. Web. 25 September 2026. <https://smartdefine.org/future-proof/thesaurus/antonyms> |