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
Big sis advice Reyes also pointed out a broader shift in how people approach fashion today, compared with the heyday of millennial style. Dan Perry, Newsweek, 1 Mar. 2025 One thing about Zendaya: sis gon’ stay booked and busy. Marc Griffin, VIBE.com, 27 Feb. 2025 Plus, there are things Roxburgh is curious to know about Colter’s sis. Matt Webb Mitovich, TVLine, 11 Feb. 2025 Her doctor told that to my mom from the time sis was a teen. Jeanne Phillips, The Mercury News, 20 Jan. 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 5 Mar. 2025.

Last Updated: - Updated example sentences
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