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
“I’m a big sis, she’s my little baby. I’m always protective, but he makes her happy and she’s happy so that’s all that matters to me,” she said.
From Los Angeles Times ● Jan. 7, 2024
She won best new artist at the VMAs where she was photographed being giggly with "big sis" Swift.
From Salon ● Oct. 5, 2023
It’s your life, sis; you gotta walk the path that feels most righteous to you,” Zora says.
From "Split the Sky" by Marie Arnold
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 Niners were the most efficient offense with motion in terms of expected points added per play, according to SIS, with Kansas City ranking 10th despite a drop this season in overall offensive production.
From Seattle Times ● Feb. 8, 2024
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.
