1) Assailant 2) Assailer 3) Attacker 4) Ham 5) Hooligan 6) Thief 1) Hammy actor 2) Overactor or robber 3) Robber 4) Stick-up artist 5) Street thief 6) Thug 7) Violent robber 
• Alt. of Muggur
Mug'ger noun Also Mug'gar Mug'gur [ Hind. magar , from Sanskrit makara sea monster.] The common crocodile ( Crocodilus palustris ) of India, the East Indies, etc. It becomes twelve feet or more long. 
Mugger is slang for a street robber.
[n] - a robber who takes property by threatening or performing violence on the person who is robbed (usually on the street)
noun a robber who takes property by threatening or performing violence on the person who is robbed (usually on the street)
a person who mugs, esp. one who assaults a person in order to rob him or her.