Radgie gadgie means: Geordie slang from the north-east of England for a bad-tempered, aggressive, or volatile man - particularly an older bloke who's quick to fly off the handle. 'Radgie' means angry or mad, while. It is mainly Scottish English and may not be understood outside that context. There is no real cause for parental concern; it is descriptive vocabulary rather than risky behaviour. As a place or proper-name reference it is purely descriptive. It is an education-system term, so usage is institutional and routine.