younger brother; little brother; kid brother

おとうと only

brother-in-law (spouse's younger brother or younger sister's husband)

てい only; Archaic

pupil; apprentice

siblings; brothers and sisters

brothers

siblings-in-law; brothers-in-law; sisters-in-law

Familiar; Male

mate; friend

pupil; disciple; adherent; follower; apprentice; young person; teacher's student-helper

older sister and younger brother

cousin (male)

becoming a pupil (of); becoming an apprentice

Common noun

younger brother (of an older brother); younger sister (of an older sister)

Common noun

youngest child

Prefix

young; younger; youngest

Prefix

young and beautiful; cute

children; sons; children and younger brothers

young people

teacher and student