sibling

noun

sib·​ling ˈsi-bliŋ 

1

: sib sense 2

also : one of two or more individuals having one common parent

2

: one of two or more things related by a common tie or characteristic

the sedan's smaller sibling

Examples of sibling in a Sentence

Recent Examples on the Web

The Dune star has five older half siblings from her father’s previous relationship. — Hannah Malach, InStyle, 2 Sep. 2026

Have an older child help a younger sibling with homework, check on an elderly neighbor, volunteer, or take responsibility for part of a family project. — Suzan J. Song, CNBC, 1 Sep. 2026

Throughout the performances, River had her arm around Remy as the siblings swayed, clapped and whooped for their mom. — Patrick Ryan, USA Today, 31 Aug. 2026

Ali Asgari’s A Bit of Light joins the lineup, a drama bout a disillusioned Iranian doctor (Misagh Zareh) who is determined to end his life, and spends one final day visiting his siblings and mother to prepare them for his departure. — Lily Ford, HollywoodReporter, 31 Aug. 2026

Word History

First Known Use

before the 12th century, in the meaning defined at sense 1

Phrases Containing sibling

• sibling rivalry
• sibling species

Kids Definition

sibling

noun

sib·​ling ˈsib-liŋ 

: one of two or more individuals having the same parents or sometimes only one parent in common

Medical Definition

sibling

noun

sib·​ling ˈsib-liŋ 

: sib

also : one of two or more individuals having one common parent