| accustomed(adjective, regular) | |
| alternating | |
| annual | |
| at different times | |
| average(adjective, regular) | |
| broken | |
| discontinuous | |
| even | |
| general(adjective, regular, normal, recurrent) | |
| infrequent | |
| odd(adjective, various, miscellaneous) | |
| ordinary(adjective, regular) | |
| orthodox(adjective, regular) | |
| pleonastic(regular, normal, recurrent, repeated) | |
| prevailing(adjective, regular) | |
| reappearing | |
| returning | |
| rhythmical(adjective, regularity of recurrence periodicity) | |
| standard(adjective, regular) | |
| stock(adjective, regular) |
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| APA | Smart Define. (2015). periodic thesaurus. Retrieved September 27, 2026, from https://smartdefine.org/periodic/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "periodic thesaurus" https://smartdefine.org/periodic/thesaurus/synonyms (accessed September 27, 2026). |
| Harvard | Smart Define 2015, periodic thesaurus, Smart Define, viewed 27 September, 2026, <https://smartdefine.org/periodic/thesaurus/synonyms>. |
| MLA | Smart Define. "periodic thesaurus" 13 April 2015. Web. 27 September 2026. <https://smartdefine.org/periodic/thesaurus/synonyms> |