- an act or instance of freaking out.
- a person who freaks out.
- to lose or cause to lose emotional control from extreme excitement, shock, fear, joy, despair, etc.: Seeing the dead body completely freaked him out.
- to enter into or cause a period of irrational behavior or emotional instability, especially under the influence of a drug: to be freaked out on LSD.
- to be or cause to be in a heightened emotional state, such as that of fear, anger, or excitement