[sɪs], (Noun)

Definitions:
- a person's sister (often used as a form of address)
(e.g: where are you going, sis?)


Phrases:

Origin:
late 16th century: abbreviation

[sɪs], (Interjection)

Definitions:
- used to express disappointment, disgust, or contempt
(e.g: sis—the floor is dirty!)


Phrases:

Origin:
from Afrikaans sies

[], (Abbreviation)

Definitions:
- (in the UK) Secret Intelligence Service


Phrases:

Origin: