If you describe a situation or series of events as uncontrollable, you believe that nothing can be done to control them or to prevent things from getting worse. If political and ethnic problems are not resolved the situation could become uncontrollable
If you describe a feeling or physical action as uncontrollable, you mean that you cannot control it or prevent yourself from feeling or doing it. It had been a time of almost uncontrollable excitement He burst into uncontrollable laughter at something I'd said. + uncontrollably un·con·trol·lably I started shaking uncontrollably and began to cry
If you describe a person as uncontrollable, you mean that their behaviour is bad and that nobody can make them behave more sensibly. Mark was withdrawn and uncontrollable Uncontrollable children grow into young criminals