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
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Noun
The carousel also includes close-ups of Mikey’s face, a selfie of Trainor and Sabara with baby, and an adorable pic of Barry looking lovingly at his little sis. Katie Atkinson, Billboard, 20 Jan. 2026 Nancy gets to pull little sis Holly out of her gross cocoon. Kelly Lawler, USA Today, 31 Dec. 2025 Forget the toys and sweaters that’ll be forgotten by New Year’s, sis. Victoria Uwumarogie, Essence, 9 Dec. 2025 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 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

Cite this Entry

“Sis.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/sis. Accessed 30 Jan. 2026.

Last Updated: - Updated example sentences
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