spontaneous, impulsive, instinctive, automatic, mechanical mean acting or activated without deliberation. spontaneous implies lack of prompting and connotes naturalness.

INSTINCTIVE definition: of, relating to, or of the nature of instinct. See examples of instinctive used in a sentence.

Not expected or planned (Definition of instinctive from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)

An instinctive feeling, idea, or action is one that you have or do without thinking or reasoning. It's an absolutely instinctive reaction–if a child falls you pick it up.

Definition of instinctive adjective in Oxford Advanced Learner's Dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more.

Being such by natural inclination rather than conscious effort or study: "Both men were instinctive masters at seizing unexpected openings and turning them into victories" (Nick Kotz).

Instinctive means arising from instinct or a natural impulse, not from conscious reasoning or learning. It characterizes automatic, unplanned behavior that is typically immediate and emotionally driven.

Arising from impulse or natural inclination; done without thought or conscious effort; spontaneous. An instinctive sympathy for the downtrodden.

INSTINCTIVE meaning: relating to or based on instinct based on feelings or desires that do not come from thinking or learning

Pertaining to actions, behaviors, or responses that are innate, intuitive, or natural, rather than learned or consciously thought out. See example sentences, synonyms, and etymology for the adjective …