The word "irrepressible" means something that cannot be controlled or contained, often characterized by strong emotions or energy that cannot be stifled or subdued. Full definition
Forget what the glossy magazines say — even bookworms have their own sense of irrepressible style. (treehugger.com)
If allowed to live the life of an outdoor cat, Manx cats will engage in hunting with irrepressible enthusiasm. (best-cat-art.com)
When Graham Cavanaugh divorced his first wife it was to marry his girlfriend, Audra, a woman as irrepressible as she is spontaneous and fun. (bookbrowse.com)