12 entries under existing topic. ×

10
accompanying(adjective, medicine, simultaneity)
10
existing simultaneously(expression, medicine, simultaneity)
9
concomitant(adjective, medicine, simultaneity)
8
attendant(adjective, medicine, simultaneity)
8
coexistent(adjective, coexistence, simultaneity)
8
coexisting(adjective, coexistence, simultaneity)
7
collateral(adjective, coexistence, simultaneity)
7
concurrent(adjective, coexistence, simultaneity)
7
synchronic(adjective, coexistence, simultaneity)
7
synchronous(adjective, coexistence, simultaneity)
3
parallel(adjective, characteristic, simultaneity)
3
simultaneous(adjective, characteristic, simultaneity)
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APASmart Define. (1970). co-morbid thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/co-morbid/thesaurus/synonyms
ChicagoSmart Define. 1970. "co-morbid thesaurus" https://smartdefine.org/co-morbid/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 1970, co-morbid thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/co-morbid/thesaurus/synonyms>.
MLASmart Define. "co-morbid thesaurus" 1 January 1970. Web. 24 September 2026. <https://smartdefine.org/co-morbid/thesaurus/synonyms>