sister

noun
sis·​ter | \ ˈsi-stər How to pronounce sister (audio) \

Definition of sister

1 : a female who has one or both parents in common with another

2 often capitalized

a : a member of a women's religious order (as of nuns or deaconesses) especially : one of a Roman Catholic congregation under simple vows
b : a girl or woman who is a member of a Christian church
3a : a girl or woman regarded as a comrade
b : a girl or woman who shares with another a common national or racial origin especially : a black girl or woman
4 : one that is closely similar to or associated with another sister cities
5 chiefly British : nurse
6a : girl, woman
b : person usually used in the phrase weak sister
7 : a member of a sorority

Keep scrolling for more

Examples of sister in a Sentence

The sisters live in the convent.

Recent Examples on the Web

As the youngest Lannister, his father Tywin and his older sister Cersei utterly despised him for his appearance and the fact that his birth led to the death of his mother. Ineye Komonibo, Marie Claire, "Tyrion Lannister Needs to Die Already on 'Game of Thrones'," 13 May 2019 Allie ends up starting an investigation to figure out who killed her sister after the town goes into high alert after hearing that there is someone out there ready to kill. Tamara Fuentes, Seventeen, "Who Killed Cassandra on "The Society"?," 13 May 2019 The mother who died in a Harlem apartment fire with four of her children and a family friend loved to cook and often brought meals to the needy, her sister said Wednesday. Katie Honan, WSJ, "Mom Killed in Harlem Blaze Known as Loving Cook," 8 May 2019 Seems his sister still blames him for the death of their mother while giving birth to him. John Carucci, The Seattle Times, "It’s not too late to dive into ‘Game of Thrones,’ with help," 13 Apr. 2019 His sister had died unexpectedly seven years earlier, so Ben's death left the three children without parents. Tamara Fuentes, Country Living, "Luke Bryan and His Wife Caroline Boyer Have the Most Relatable Love Story," 28 Mar. 2019 In Moon Rising, Lucas has seized control, and the only person who can stop him is his sister, Ariel. Andrew Liptak, The Verge, "All the science fiction and fantasy books we’re looking forward to in 2019," 30 Dec. 2018 Hadid recalls two pieces in particular that shaped his love of jewelry, including one belonging to his sister Bella, a necklace that had angels, two swords, and manuscripts. Liana Satenstein, Vogue, "Anwar Hadid Wants Everyone to Wear His Unisex Jewelry Label," 8 Apr. 2019 Her color typically fluctuates between jet black and chocolate brown, a strong contrast to her sister Gigi's lighter strands. Leah Prinzivalli, Allure, "Bella Hadid Dyed Her Hair Dirty Blonde — and She Looks So Much Like Gigi Now," 26 Mar. 2019

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'sister.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

See More

First Known Use of sister

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

History and Etymology for sister

Middle English suster, sister, partly from Old English sweostor and partly from Old Norse systir sister; akin to Latin soror sister, Sanskrit svasṛ

Keep scrolling for more

Learn More about sister

Statistics for sister

Last Updated

20 May 2019

Look-up Popularity

Time Traveler for sister

The first known use of sister was before the 12th century

See more words from the same century

Keep scrolling for more

More Definitions for sister

sister

noun

English Language Learners Definition of sister

: a girl or woman who has one or both of the same parents as you
informal used when talking to a woman
: a member of a religious community of women

sister

noun
sis·​ter | \ ˈsi-stər How to pronounce sister (audio) \

Kids Definition of sister

1 : a female person or animal related to another person or animal by having one or both parents in common
2 : a member of a religious society of women : nun
3 : a woman related to another by a common tie or interest

Other Words from sister

sisterly adjective

sister

noun
sis·​ter | \ ˈsis-tər How to pronounce sister (audio) \

Medical Definition of sister

chiefly British
: a head nurse in a hospital ward or clinic broadly : nurse

Keep scrolling for more

More from Merriam-Webster on sister

Rhyming Dictionary: Words that rhyme with sister

Spanish Central: Translation of sister

Nglish: Translation of sister for Spanish Speakers

Britannica English: Translation of sister for Arabic Speakers

Comments on sister

What made you want to look up sister? Please tell us where you read or heard it (including the quote, if possible).

WORD OF THE DAY

using a distributed computer network

Get Word of the Day daily email!

Test Your Vocabulary

Time Traveler Quiz: Which Word Came First?

  • time traveler quiz which word came first
  • Which came first?
True or False

Test your knowledge - and maybe learn something along the way.

TAKE THE QUIZ
Syn City

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!