sis
noun
sis
1 American
[sis]
/ sɪs /
noun
Informal.
-sis
2
American
SIS
1
British
abbreviation
-
Also called: MI6. (in Britain) Secret Intelligence Service
-
(in New Zealand) Security Intelligence Service
sis
2
British
/ sɪs /
noun
sis
3
British
/ siːs, sɪs /
interjection
Etymology
Origin of sis1
1825–35, shortened form; compare Dutch zus for zuster sister
Origin of -sis2
From Greek
Vocabulary lists containing sis
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
See Examples For:
"Hey Sis, call me back when you get this. I was just calling to see how your day went! I love you to the moon & back sis," it read.
From BBC ● Sep. 3, 2026
You’ve said your sis won’t stop harping on your solution, which suggests there’s a deeper issue here.
From Slate ● Mar. 20, 2024
It's so nice to have someone like that in your life too, just to be like, sis, you ain't doing it, so do it like this.
From Salon ● Jul. 13, 2023
Dee and Lee’s youngest boy sleeping in their bedroom till he’s 5 or 6, then sharing a room with his big sis.
From New York Times ● Dec. 27, 2022
“Rah, rah, sis boom”—I jumped with both feet and threw back my arms—"bah!"
From "Crash" by Jerry Spinelli
Sallay was promoted to head the SIS, Sri Lanka’s main intelligence agency, following Rajapaksa's victory, but was dismissed after Anura Kumara Dissanayake won the presidency in 2024, promising prosecutions of those behind the attacks.
From Barron's ● Feb. 25, 2026
Slovakia's domestic intelligence service, the SIS, has confirmed the claims, but has given few details.
From BBC ● Jan. 24, 2025
The SIS did not state when the foreign nationals arrived in Moldova, which countries they were from, or for whom they were allegedly working.
From Seattle Times ● Feb. 27, 2023
Sandu said that between October and December, Moldovan police and its Intelligence and Security Service, or SIS, have intervened in “several cases of organized criminal elements and stopped attempts at violence.”
From Washington Times ● Feb. 13, 2023
William also had several Jewish colleagues in the SIS, most of whom he hired himself.
From "The Woman All Spies Fear" by Amy Butler Greenfield
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
