sister

American  

[sis-ter] / ˈsɪs tər /

noun

1. a female offspring having both parents in common with another offspring; female sibling.

2. Also called half sister.  a female offspring having only one parent in common with another offspring.

3. stepsister.

4. a female friend or protector regarded as a sister.

5. a thing regarded as feminine and associated as if by kinship with something else.

   The ships are sisters.

6. a female fellow member, as of a church.

7. a female member of a religious community that observes the simple vows of poverty, chastity, and obedience.

8. British. a nurse in charge of a hospital ward; head nurse.

9. Informal. a term used to refer to or address a fellow Black woman; soul sister.

10. a woman who supports, promotes, or participates in feminism.

11. Informal. a form of address used to a woman or girl, especially jocularly or contemptuously.

    Listen, sister, you've had enough.

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adjective

1. being or considered a sister; related by or as if by sisterhood.

   sister ships.

2. having a close relationship with another because of shared interests, problems, or the like.

   We correspond with school children in our sister city.

3. Biochemistry. being one of an identical pair.

sister British  

/ ˈsɪstə /

noun

1. a female person having the same parents as another person

2. See half-sister stepsister

3. a female person who belongs to the same group, trade union, etc, as another or others

4. informal a form of address to a woman or girl, used esp by Black people in the US

5. a senior nurse

6. RC Church a nun or a title given to a nun

7. a woman fellow member of a Church or religious body

8. (modifier) belonging to the same class, fleet, etc, as another or others

   a sister ship

9. (modifier) biology denoting any of the cells or cell components formed by division of a parent cell or cell component

   sister nuclei

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Other Word Forms

• nonsister noun
• sisterless adjective
• sisterlike adjective

Etymology

Origin of sister

First recorded before 900; Middle English (noun) from Old Norse systir; cognate with Old English sweoster, Dutch zuster, German Schwester, Gothic swistar; akin to Serbo-Croatian sèstra, Lithuanian sesuõ, Latin soror (from unattested swesor ), Old Irish siur, Welsh chwaer, Sanskrit svasar “sister,” Greek éor “daughter, niece”

Example Sentences

On Feb. 4, she posted a tearful video plea on her Instagram account, accompanied by her brother and sister.

From The Wall Street Journal

"My sisters live 10 minutes up the road, and they could smell it," Allison said.

From BBC

“I live with my sister, and she couldn’t keep up with the amount of bread I was producing,” Chilcott told the outlet.

From Salon

I have one daughter who is well off, having received a generous bequest through my deceased sister’s will.

From MarketWatch

Caroline Kennedy, JFK Jr.’s sister, and a member of the Bessette family did not respond to requests for comment.

From The Wall Street Journal

Related Words

• relative
• twin