uncontrollable
adj.adj. impossible to manage or stop. You use this to describe feelings, people, or situations that you cannot keep under control.
adj. impossible to restrain, manage, or govern. Often describes physiological responses or intense emotional states that occur despite the subject's efforts to suppress them.
She burst into uncontrollable laughter during the meeting.
The forest fire became uncontrollable due to the high winds and dry conditions in the valley.
The witness was overcome by uncontrollable sobbing, forcing the judge to call a brief recess so the proceedings could continue in a more orderly fashion.
From un- + controllable.
Often used predicatively after linking verbs like 'become' or 'seem', or attributively before nouns describing emotions or physical reactions.