yob

Etymology

Backslang for boy. The second sense was likely influenced by hobnob and/or yokel.

noun

1. (obsolete, costermongers, back slang) A boy.
   And you bet that each gal, not to mention each yob, 1897, A. R. Marshall, Pomes from the Pink 'Un, page 76
   As we left the cemetery, I heard an elderly gravedigger muttering back slang to himself before Lucien's headstone. "Bloody shame, ain't it? Doubt the yob did much living by eighteen." I corrected the man, saying, “No fear, that yob did plenty of living.” 2010, Paul R. Wilson, The Birthday of Eternity, page 209
2. (derogatory, chiefly Britain, New Zealand, slang) A person who engages in antisocial behaviour or drunkenness.
   2005-01-10, Melissa Jackson, “Music to deter yobs by”, in BBC News:
   Yes, it's holiday time again for British yobs – and the rest of us can flee to those parts of Abroad which the louts ignore, or just cringe in shame at home. 2009-08-08, Janet Daley, “The real reason for all those louts on holiday”, in The Telegraph
   But while doing 70mph on the A1, a hooded yob threw rock from a grass verge onto the windscreen of the family’s Jeep, causing it to swerve. 2017-03-27, Keiran Southern, “'We could have been killed': Fury at yobs who bricked windscreen with baby girl in car”, in Chronicle Live, retrieved 2017-03-28
   Three local yobs have also joined, but they have not reckoned on a redoubtable Conductor and two local revenue protection officers who soon escort them off the train! November 2 2022, Paul Bigland, “New trains, old trains, and splendid scenery”, in RAIL, number 969, page 57