uncontrollable

An uncontrollable feeling or action can't be stopped or managed by someone's willpower. You might feel an uncontrollable urge to laugh when something silly happens.

When we say that something is uncontrollable, it usually means that it's beyond our ability to control it with our own strength or effort. For example, if you have a fear of heights and are on a high building, your legs might become uncontrollable and shake. It's not just that you're weak; it's more like your body reacts in a way that can't be stopped. We also use this word for situations where emotions take over, such as being uncontrollably angry or sad.