Did you know that all these words are of Romany - And not of English origin?
Chav - a member of a youth subculture, from chav/chavo the Romany word for boy
Chor - to steal, from the Romani word meaning the same
Cosh - a weapon, truncheon, baton, from the Romani word cosht, meaning stick
Cushty - easy, good, fine, from the Romani word kusht/kushti
Dinlo - idiot, either from the Romani word "dilo" meaning fool, or "dinilo" meaning crazy.
Jell - to go, from the Romani word "jall" meaning the same thing
Lollipop - a type of candy, from the Romani "loli phabai", meaning red apple
Moosh - colloquial meaning a man, a bloke, from Romani mush meaning man.
Nark - a police informer, from nāk/nose
Pal - a friend, from the Romani word phral, meaning brother
Ratley - a female, from the Romani word "rakli" meaning the same
Shiv - an improvised knife or similar weapon, from the Romani word Chiv/Shiv meaning the same thing
Skip - waste collecting container like on building sites - from Romani word skip meaning basket
Togs - clothes, from the Romani word togs meaning clothes
Mort - Means women, Romani for woman and mother
Gavver - police office, Romani for police officer
Dordy - Romani word used instead of cor
Gibberish - Means to talking nonsense. From the Romani word Jib, meaning tongue as well as language
Muller - Means to beat, hurt or kill in English. Means to die in Romani.
Corey - Male genitals, Romani for the same thing
Parni - Urine, Romani for water
Jank - Bad, Romani for poo