93 entries under adjective topic. ×

19
contagious(move, unhealthy, widespread, fatal)
12
communicable(move, able, taking, deadly)
12
infective(taking, catching, poisonous, spreading)
11
toxic(unclean, catching, spreading)
11
catching(verb, move, deadly, widespread)
8
transmissible
7
deadly
7
epidemic(noun, widespread, catching, wide-ranging)
7
taking(verb, move, deadly, catching)
6
noxious(catching, spreading)
6
pestilent(dangerous, catching, spreading, transferable)
6
poisonous
5
pestiferous
5
pestilential(catching, spreading)
5
transmittable(taking, deadly, catching, poisonous)
5
zymotic
4
virulent(catching, spreading)
4
baneful
4
corrupting(catching, spreading)
4
miasmic(catching, spreading, transferable, communicable)
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APASmart Define. (2015). infectious thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/infectious/thesaurus/synonyms
ChicagoSmart Define. 2015. "infectious thesaurus" https://smartdefine.org/infectious/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2015, infectious thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/infectious/thesaurus/synonyms>.
MLASmart Define. "infectious thesaurus" 14 April 2015. Web. 24 September 2026. <https://smartdefine.org/infectious/thesaurus/synonyms>