black sheep

US /blæk ʃiːp/
UK /blæk ʃiːp/
"black sheep" picture
1.

le mouton noir

a member of a family or group who is regarded as a disgrace to them

:
He was always considered the black sheep of the family because of his unconventional lifestyle.
Il a toujours été considéré comme le mouton noir de la famille en raison de son mode de vie non conventionnel.
Every organization has its black sheep, but we try to support everyone.
Chaque organisation a son mouton noir, mais nous essayons de soutenir tout le monde.