Synonyms of automatic

1 Syllable
self
2 Syllables
reflex, will-less, re-flex
3 Syllables
spontaneous, unbidden, visceral, electric, robotic, habitual, addicting, self-moving, self-starting, hot-and-cold, unprompted, off-the-cuff
4 Syllables
impulsive, unreflecting, autonomic, automatous, electronic, mechanical, reflexive, motorized, automated, intuitive, mechanized, electrical
5 Syllables
spur-of-the-moment, unpremediated, extemporaneous, self-regulating, uncalculated, involuntary, machine-driven, unmeditated
6 Syllables
improvisatory