Antonyms of adj unprompted

1 sense of unprompted

Sense 1
impulsive, unprompted -- (proceeding from natural feeling or impulse without external stimulus; "an impulsive gesture of affection")

INDIRECT (VIA spontaneous) -> induced -- (brought about or caused; not spontaneous; "a case of steroid-induced weakness")

Similarity of adj unprompted

1 sense of unprompted

Sense 1
impulsive, unprompted -- (proceeding from natural feeling or impulse without external stimulus; "an impulsive gesture of affection")
       => spontaneous (vs. induced), self-generated -- (happening or arising without apparent external cause; "spontaneous laughter"; "spontaneous combustion"; "a spontaneous abortion")