sis

1 of 3

noun

ˈsis 

: 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

Noun

One sis happens to be annoyingly sweet and clueless, the other a wild vixen with an out-of-control libido. —Randy Myers, The Mercury News, 8 May 2024

The former Real Housewives of Potomac star is pregnant with her first child with husband Chris Bassett, and sis was glowing at a recent event. —Elizabeth Ayoola, Essence, 2 May 2024

Word History

Etymology

Noun suffix

Latin, from Greek, feminine suffix of action

First Known Use

Noun

1596, in the meaning defined above