\ ˈsis How to pronounce sis (audio) \

Definition of sis

 (Entry 1 of 3)

: sister usually used in direct address

Definition of SIS (Entry 2 of 3)

Secret Intelligence Service

Note: The Secret Intelligence Service is a British government agency that is responsible for the collection and analysis of information about foreign countries or groups.

plural -ses

Definition of -sis (Entry 3 of 3)

: process : action peristalsis

Examples of sis in a Sentence

Recent Examples on the Web: Noun Two young Gendarmarie police recruits, Marc and Franky, and his sis Vicky, a law student and pirate radio DJ, move to Brussels. John Hopewell, Variety, 2 Apr. 2022 One famous plus one who does appear primed to climb aboard the Kardashian fame bus is Blink-182 drummer Travis Barker, who has already been featured in some of the promo clips for the series thanks to his engagement to oldest K sis, Kourtney. Gil Kaufman, Billboard, 10 Mar. 2022 First thing in the morning—at 6 a.m. Pacific Time, to be exact—Kourt's little sis Kim Kardashian shared a special birthday message along with photos of the two sisters in coordinating swimsuits. Carrie Wittmer, Glamour, 18 Apr. 2022 Yet through DEnise’s baby sis, born almost exactly a year later, the victims and ugly reverberations of the day that snatched their life still breathe. Roy S. Johnson |, al, 4 Apr. 2022 Jenner and Scott know how to be parents, but can the little girl learn to be a big sis? Elizabeth Logan, Glamour, 21 Mar. 2022 Creativity is certainly her wheelhouse, as sis is good at so many things simultaneously. Elizabeth Ayoola, Essence, 17 Mar. 2022 Those skills came in handy when Luke started writing experimental beats on a DAW and recruited his lil’ sis to play them live. Billboard Staff, Billboard, 1 Feb. 2022 Big sis was always trying to be the peacemaker between us. Washington Post, 3 Dec. 2021 See More

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

First Known Use of sis


1596, in the meaning defined above

History and Etymology for sis

Noun suffix

Latin, from Greek, feminine suffix of action

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Last Updated

7 May 2022

Cite this Entry

“Sis.” Dictionary, Merriam-Webster, Accessed 17 May. 2022.

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