sis

noun
\ 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

With the help of little sis, Karin, Vonn and Suban hit it off — although Vonn was still dating someone else at the time. The Denver Post, "Lindsey Vonn and NHL star P.K. Subban announce engagement," 23 Aug. 2019 Now, all Max needs is a step brother and a maniacal little sis! Carolyn Twersky, Seventeen, "Josh Peck Just Became a Dad!," 2 Jan. 2019 Our President sis on schedule to forge a relationship with North Korea in Singapore that will cause Pyongyang to dismantle its nuclear weapons. Fox News, "Trump slams 'meek' Trudeau for 'dishonest' news conference," 10 June 2018 Their mini reunion comes months after Jordyn was accused of hooking up with Tristan Thompson, then-boyfriend of Kylie’s big sis Khloé Kardashian (and father to Khloé’s child, True Thompson). Teen Vogue, "Jordyn Woods and Kylie Jenner Reunited at a Club Party in Hollywood, Months After Tristan Thompson Rumors," 11 June 2019 My sis is trying to update the condo and make sure my brother moves out as soon as my Mom passes. The Washington Post, "Carolyn Hax Live: 'The cat is your guardian angel'," 25 Jan. 2019 Shout out to my kid sis @desmondisamazing on his NYFW runway debut for @gypsysport — 10 years old and already serving. . . . . . Eileen Reslen, Cosmopolitan, "A 10-Year-Old "Drag Kid" Just Stole the Show at New York Fashion Week," 12 Feb. 2018 The dinosaur that made them was a theropod, probably Coelophysis (see-low-FY-sis), a meat-eater that stood about 7 feet tall. David Lyon, BostonGlobe.com, "Making tracks: Walking in the footsteps of New England dinosaurs," 18 June 2019 Her home life can feel sketchy, despite the cheerful presence of Storm Reid as her little sis. Darren Franich, EW.com, "HBO's teen shock-soap Euphoria is sweeter than you think: EW review," 14 June 2019

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.

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First Known Use of sis

Noun

1596, in the meaning defined above

History and Etymology for sis

Noun suffix

Latin, from Greek, feminine suffix of action

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