Violent

adj. using unwarranted injurious force, brutal; strong, forceful; tempestuous, raging; vehement

Violence is the use of physical force against persons that potentially causes fear, injury or death.  Damage, in some contexts, is also considered a form of violence. The definition of violence is often widened to include threats of physical force and substantially abusive language and harassing actions.
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adj. violent, wild, fierce; vicious, impetuous; rude, severe, rough; sharp, tempestuous

v. violate, ravish, rape; break, offend against, force; infringe, breach, invade

(v. t.)
To urge with violence.
  

(v. i.)
To be violent; to act violently.
  

(n.)
An assailant.
  

(a.)
Produced or effected by force; not spontaneous; unnatural; abnormal.
  

(a.)
Moving or acting with physical strength; urged or impelled with force; excited by strong feeling or passion; forcible; vehement; impetuous; fierce; furious; severe; as, a violent blow; the violent attack of a disease.
  

(a.)
Acting, characterized, or produced by unjust or improper force; outrageous; unauthorized; as, a violent attack on the right of free speech.
  

Adjective
1. acting with or marked by or resulting from great force or energy or emotional intensity; "a violent attack"; "a violent person"; "violent feelings"; "a violent rage"; "felt a violent dislike"
(antonym) nonviolent
(similar) convulsive
(see-also) hostile
2. effected by force or injury rather than natural causes; "a violent death"
(similar) unnatural
3. (of colors or sounds) intensely vivid or loud; "a violent clash of colors"; "her dress was a violent red"; "a violent noise"; "wild colors"; "wild shouts"
(synonym) wild
(similar) intense
4. marked by extreme intensity of emotions or convictions; inclined to react violently; fervid; "fierce loyalty"; "in a tearing rage"; "vehement dislike"; "violent passions"
(synonym) fierce, tearing, vehement, trigger-happy
(similar) intense
5. characterized by violence or bloodshed; "writes of crimson deeds and barbaric days"- Andrea Parke; "fann'd by Conquest's crimson wing"- Thomas Gray; "convulsed with red rage"- Hudson Strode
(synonym) crimson, red
(similar) bloody