Noah Webster's Dictionary 1. (a.) Impulsive; extemporaneous; proceeding from natural feeling, temperament, or disposition, or from a native internal proneness, readiness, or tendency, without constraint; as, a spontaneous gift or proportion. 2. (a.) Proceeding from, or acting by, internal impulse, energy, or natural law, without external force; as, spontaneous motion; spontaneous growth. 3. (a.) Produced without being planted, or without human labor; as, a spontaneous growth of wood.

Multi-Version Concordance Spontaneous (5 Occurrences) Philemon 1:14 But I was willing to do nothing without your consent, that your goodness would not be as of necessity, but of free will. (See NIV) Leviticus 25:5 the spontaneous growth of thy harvest thou dost not reap, and the grapes of thy separated thing thou dost not gather, a year of rest it is to the land. (YLT) Leviticus 25:11 A jubilee it 'is', the fiftieth year, a year it is to you; ye sow not, nor reap its spontaneous growth, nor gather its separated things; (YLT) 2 Kings 19:29 And this to thee 'is' the sign, Food of the year 'is' the spontaneous growth, And in the second year the self-produced, And in the third year sow ye, and reap, And plant vineyards, and eat their fruits. (YLT) Isaiah 37:30 -- And this to thee 'is' the sign, Food of the year 'is' self-sown grain, And in the second year the spontaneous growth, And in the third year, sow ye and reap, And plant vineyards, and eat their fruit. (YLT)