Synonyms of instinctual

2 Syllables

normal, will-less, re-flex, knee-jerk, rooted, inborn

3 Syllables

spontaneous, native, inherent, typical, regular, visceral, ingrained, habitual, natural, unlearned, unthinking, unwilled, intrinsic, unprompted, innate

4 Syllables

accustomed, intuitional, impulsive, unreflecting, mechanical, instinctive, reflexive, intuitive, congenital

5 Syllables

second-nature, uncalculated, involuntary, autogenetic, unmeditated

6 Syllables

unpremeditated