16 entries under infrequent topic. ×
| rare(adjective, exceptional, irregular) | |
| occasional(adjective, regular, irregular, sporadic) | |
| sporadic(adjective, regular, irregular) | |
| uncommon(adjective, ordinary, irregular, commonplace) | |
| unusual(adjective, irregular) | |
| irregular | |
| inconstant(adjective, irregular) | |
| intermittent(adjective, regular, irregular) | |
| unrepeated(adjective, irregular) | |
| scarce(adjective, insufficient) | |
| interrupted(adjective, irregular, perennial, seasonal) | |
| broken(adjective, irregular) | |
| ceasing(adjective, irregular, perennial, seasonal) | |
| continual(adjective, irregular) | |
| ending(adjective, irregular) | |
| permanent(adjective, irregular) |
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| APA | Smart Define. (2015). frequent thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/frequent/thesaurus/antonyms |
| Chicago | Smart Define. 2015. "frequent thesaurus" https://smartdefine.org/frequent/thesaurus/antonyms (accessed September 24, 2026). |
| Harvard | Smart Define 2015, frequent thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/frequent/thesaurus/antonyms>. |
| MLA | Smart Define. "frequent thesaurus" 13 April 2015. Web. 24 September 2026. <https://smartdefine.org/frequent/thesaurus/antonyms> |