spontaneous

adjective

Stress: second syllable

Syllables: spon-ta-ne-ous (4)

English Definition

Happening or done in a natural, often sudden way, without any planning or without being forced.

Example Sentence

The audience burst into spontaneous applause.

US IPA /spɑːnˈteɪniəs/
UK IPA /spɒnˈteɪniəs/