せがれ
son; punk; brat; penis
JLPT N1 Also written 伜、悴、忰
Noun
叔父おじの兄あにの倅せがれが変へんなビジネスに手てを染そめて、家名かめいを落おとすことになった。
My uncle's brother's son got involved in a shady business and disgraced the family.