sis

1 of 3

noun

: sister
usually used in direct address

SIS

2 of 3

abbreviation

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

3 of 3

noun suffix

plural -ses
: process : action
peristalsis

Examples of sis in a Sentence

Recent Examples on the Web
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Noun
Kim admitted that the Shoulder Bag was always meant to be hers — even before her mom gave one to her little sis, Kylie Jenner. Michelle Lee, PEOPLE, 27 Oct. 2025 Born Gloria Halleujah Woods, the artist was all smiles at the game, wearing a black and white dress that complemented her toned figure (sis has been in the gym). Elizabeth Ayoola, Essence, 24 Oct. 2025 Say goodbye to momma’s boys—and hello to the brothers trained by their big sis. Jenna Ryu, SELF, 18 Sep. 2025 Well, sis, chat, W Sister in the chat, man. Marni Rose McFall, MSNBC Newsweek, 9 Sep. 2025 See All Example Sentences for sis

Word History

Etymology

Noun suffix

Latin, from Greek, feminine suffix of action

First Known Use

Noun

1596, in the meaning defined above

Time Traveler
The first known use of sis was in 1596

Browse Nearby Words

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Cite this Entry

“Sis.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/sis. Accessed 3 Nov. 2025.

Last Updated: - Updated example sentences
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