big brother

Firstborn male child

A big brother is an older male sibling.

The term extends to any older male who serves as a mentor or protector, as in the Big Brothers organization that pairs adult volunteers with fatherless boys.

My big brother taught me to ride a bike. (Capitalized Big Brother refers to authoritarian surveillance.)

Opposites
family position

big brotherlittle brother

Younger male sibling

baby brother · younger brother · little sister · baby sister · younger sister

surveillance/authority

big brotherindividual freedom

Personal autonomy from control

personal liberty · privacy · autonomy · civil liberties · free society

Family

big, brother, bighearted

Familiarity
Top 50,000
Profile
Known to kids · Used worldwide · Timeless · Concrete · Everyday, not technical · Rated PG