optimal (adjective) optimal: optimum
Sinonime: automatic, begrudging,
blind,
compulsory, conditioned,
forced, grudging,
habitual,
impulsive,
instinctive, instinctual, knee-jerk,
obligatory, reflex, reflexive,
reluctant,
spontaneous, uncalculated,
unconscious,
uncontrolled, unintended, unintentional, unmeditated, unpremeditated, unprompted, unthinking,
unwilling, unwitting, will-less
Antonime: conscious, intentional, unforced,
voluntary