spontaneous
adjectiveUK /spɒnˈteɪ.ni.əs/
US /spɑːnˈteɪ.ni.əs/
Doing something right away because you want to, without planning it.
She gave a spontaneous hug when she saw her friend.
RELATED WORDS
OTHER MEANINGS
2. Happening naturally without anyone making it happen.
The crowd broke into spontaneous applause.
3. Growing or occurring on its own in nature, not planted or arranged.
Spontaneous wildflowers covered the hillside.
4. Done in a relaxed, open way rather than forced or practiced.
His spontaneous laugh made everyone feel at ease.