sis

noun

\ ˈsis

How to pronounce sis (audio)

\

Definition of sis

(Entry 1 of 3)

: sister —usually used in direct address

SIS

abbreviation

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.

-sis

noun suffix

plural -ses

Definition of -sis (Entry 3 of 3)

: process : action peristalsis

Examples of sis in a Sentence

Recent Examples on the Web: Noun Now that vaccines are rolling out and spring is springing, this diminutive pearl is primed to join big sis as another Shoals area must-do. — Matt Wake | Mwake@al.com, al, "The Alabama meat-and-three lunch goes postmodern," 30 Mar. 2021 World, meet Beauty Bag, the big sis to the startup's beloved pink bubble pouches. — Karina Hoshikawa, refinery29.com, "Glossier Just Launched The Makeup Bag Of Your Dreams," 4 Mar. 2021 Every young woman deserves some real gold in her ear—so why not be the one to buy it for your lil sis? — Popular Science, "Unique birthday gifts for sisters: A cool sibling’s gift-buying guide," 27 Feb. 2021 After both my folks passed, my bro, sis and I divvied up their stuff. — Paul Daugherty, The Enquirer, "Doc's Morning Line: We need a new name for March Madness this year, at least around here," 3 Mar. 2021 Whether sage itself has power, or the actions are purely symbolic, a good smudge will give your sis an opportunity to boost the positive vibes at her home or office. — Popular Science, "Unique birthday gifts for sisters: A cool sibling’s gift-buying guide," 27 Feb. 2021 She’s best known for playing Shuri, a genius scientist and the little sis of King T’Challa (the late Chadwick Boseman) in Black Panther, the movie that broke the mold of the mostly white Marvel franchise. — Kathleen Newman-bremang, refinery29.com, "Letitia Wright’s New Role Honours Black Women of The Resistance," 1 Dec. 2020 She’s best known for playing Shuri, a genius scientist and the little sis of King T’Challa (the late Chadwick Boseman) in Black Panther, the movie that broke the mold of the mostly white Marvel franchise. — Kathleen Newman-bremang, refinery29.com, "Letitia Wright’s New Role Honours Black Women of The Resistance," 1 Dec. 2020 She’s best known for playing Shuri, a genius scientist and the little sis of King T’Challa (the late Chadwick Boseman) in Black Panther, the movie that broke the mold of the mostly white Marvel franchise. — Kathleen Newman-bremang, refinery29.com, "Letitia Wright’s New Role Honours Black Women of The Resistance," 1 Dec. 2020

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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Last Updated

1 Apr 2021

Cite this Entry

“Sis.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/sis. Accessed 16 Apr. 2021.

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