Involuntary

What is Involuntary ?

Involuntary is (adj) 1. done suddenly in a way that you cannot control His leg gave an involuntary jerk when the doctor tapped his knee. Her cry was the involuntary reaction of a mother protecting her young. 2. not done willingly Does the travel insurance cover the involuntary cancellation of the holiday?

 

source: Easier English, Student Dictionary Upper Intermediate Level