Proceding from natural feeling, temperament, or disposition, or from a native internal proneness, readiness, or tendency, without constraint; as, a spontaneous gift or proportion.
- Happening or arising without apparent external cause; self-generated.
- Arising from a natural inclination or impulse and not from external incitement or constraint.
- Unconstrained and unstudied in manner or behavior.
- Growing without cultivation or human labor.