disinhibition

(dĭsˌĭn-hə-bĭshˈən, -ĭn-ə-, dĭs-ĭnˌ-)

1. Loss of inhibition, as through the influence of external stimuli such as drugs or alcohol, or as a result of brain damage.
2. Unrestrained behavior resulting from a lessening or loss of inhibitions or a disregard of cultural constraints.