17
concurrent(adjective, time, concurrent, occurring, synchronism)
16
contemporaneous(adjective, time, contemporary, synchronism, simultaneous)
15
contemporary(adjective, time, existing, occurring, synchronism)
14
coincident(adjective, together, concurrent, concurring, synchronism)
14
synchronic(adjective, time, contemporary, synchronism)
11
coexistent(adjective, time, contemporary, congruous, occurring)
11
simultaneous(adjective, occurring, synchronism, simultaneous)
10
coeval(adjective, time, synchronism, simultaneous)
10
synchronal(adjective, synchronism)
9
coetaneous(adjective, time, contemporary, synchronism)
9
concomitant(adjective, accompanying, contributing, occurring, synchronism)
7
co-morbid
7
coinciding
7
synchronized(adjective, simultaneous)
6
accompanying(adjective, simultaneous)
6
coexisting
5
coherent
5
consistent
5
cooperative(adjective, congruous, concurrent)
5
participative
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APASmart Define. (2016). synchronous thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/synchronous/thesaurus/synonyms
ChicagoSmart Define. 2016. "synchronous thesaurus" https://smartdefine.org/synchronous/thesaurus/synonyms (accessed September 21, 2026).
HarvardSmart Define 2016, synchronous thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/synchronous/thesaurus/synonyms>.
MLASmart Define. "synchronous thesaurus" 10 March 2016. Web. 21 September 2026. <https://smartdefine.org/synchronous/thesaurus/synonyms>