spontaneous
WordReference English Thesaurus © 2025
Sense: Adjective: unplanned
Synonyms:
unplanned, impromptu, unintentional, impulsive, offhand, off-the-cuff , unrehearsed, unprovoked, instant Collocations, unpremeditated, ad-lib
Antonyms:
deliberate Collocations, willful, intended Collocations, planned, scripted, premeditated, designed, intentional, prearranged, avoidable, controllable, planned in advance
Sense: Adjective: instinctive
Synonyms:
instinctive, instinctual, natural Collocations, automatic, knee-jerk, reflex, involuntary, mechanical Collocations, unconscious Collocations, unwilled, uncontrollable, unbidden