1) Ebullient 2) Uncontrolled 3) Unmanageable 1) Impossible to restrain 2) Uncontrollable 3) Uncontrolled 
• (a.) Not capable of being repressed, restrained, or controlled; as, irrepressible joy; an irrepressible conflict.
Ir`re·press'i·ble adjective Not capable of being repressed, restrained, or controlled; as, irrepressible joy; an irrepressible conflict. W. H. Steward. 
[adj] - impossible to repress or control
uncontrollable adjective impossible to repress or control; `an irrepressible chatterbox`; `uncontrollable laughter`
incapable of being repressed or restrained; uncontrollable: irrepressible laughter.