35 entries under reflex topic. ×

33
automatic(adjective, concern, ordinary, natural, usual)
23
involuntary(adjective, natural, unthinking, necessity, superficial)
17
habitual(adjective, ordinary, natural, usual, regular)
16
unthinking(adjective, careless, natural, thoughtless, necessity)
15
instinctive(adjective, rude, careless, natural, thoughtless)
14
impulsive(adjective, rude, careless, natural, thoughtless)
13
regular(adjective, natural, consistent, balanced, orderly)
12
spontaneous(adjective, natural, routine, impulsive, instinctive)
12
instinctual(adjective, natural, instinctive, automatic, innate)
11
unconscious(adjective, careless, natural, routine, thoughtless)
11
intuitive(adjective, natural, instinctive, automatic, involuntary)
11
knee-jerk(adjective, natural, routine, instinctive, automatic)
11
natural(adjective, usual, established, instinctive, automatic)
10
mechanistic(adjective, automatic)
7
unpremeditated(adjective, rude, careless, natural, thoughtless)
6
accustomed(adjective, natural, established, instinctive, automatic)
6
congenital(adjective, natural, instinctive, automatic, inherent)
6
inborn(adjective, natural, instinctive, automatic, inherent)
6
ingrained(adjective, natural, established, instinctive, automatic)
6
inherent(adjective, natural, instinctive, automatic, innate)
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APASmart Define. (2015). mechanical thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/mechanical/thesaurus/synonyms
ChicagoSmart Define. 2015. "mechanical thesaurus" https://smartdefine.org/mechanical/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2015, mechanical thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/mechanical/thesaurus/synonyms>.
MLASmart Define. "mechanical thesaurus" 13 April 2015. Web. 22 September 2026. <https://smartdefine.org/mechanical/thesaurus/synonyms>