English
juvenile delinquent
From juvenile + delinquent.
A compound of juvenile + delinquent
Proto-Indo-European *h₂ey- ‘vital force, life, age, eternity’
…
Proto-Indo-European *h₂yéwHō ‘young’
Proto-Italic *juwō ‘young’
Latin iuvenis ‘young’
Latin iuvenīlis ‘youthful’
English juvenile
Proto-Indo-European *leykʷ- ‘to leave’
Latin delinquens ‘transgressing’
Middle French délinquant
English delinquent
Today it means
noun A persistent young offender; an antisocial minor, one who has committed criminal acts such as theft or violence.
Language periods are conventional ranges, not dates for this word.
Etymograph / juvenile delinquent