spontaneously
adv. manneradv. to do something suddenly because you want to, without planning it first. It describes an action that happens naturally on its own.
adv. occurring as a result of a sudden inner impulse or inclination and without premeditation. Often describes natural processes that occur without external influence.
The crowd spontaneously started to cheer.
After the performance ended, the audience spontaneously rose for a standing ovation despite no one leading the applause.
In certain chemical environments, the compound may spontaneously ignite when exposed to oxygen, requiring researchers to handle the substance within a strictly controlled vacuum.
From spontaneous + -ly.
Typically placed before the main verb or at the end of a clause to describe how an action occurs.
He did it spontaneousHe did it spontaneouslyLearners often use the adjective form 'spontaneous' when the adverbial form is required to modify a verb.