непроизво́льно
involuntarily, unintentionally, automatically, spontaneously
Example:Он непроизвольно вздрогнул от неожиданного шума.
He involuntarily flinched from the sudden noise.
involuntarily, unintentionally, automatically, spontaneously
Он непроизвольно вздрогнул от неожиданного шума.
He involuntarily flinched from the sudden noise.