spontaneous
B2Ածական/US /spɑntˈeɪniːəs/ spänt-ĀN-ē-əs; UK /spɑntˈeɪniːəs/ spänt-ĀN-ē-əs/
Proceding from natural feeling, temperament, or disposition, or from a native internal proneness, readiness, or tendency, without constraint; as, a spontaneous gift or proportion.
