sis(redirected from -sis)
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informal short for sister
sis(sɪs; siːs) or
informal South African an exclamation of disgust
[Afrikaans, possibly from Khoi]
1. (Government, Politics & Diplomacy) Also called: MI6 (in Britain) Secret Intelligence Service
2. (Government, Politics & Diplomacy) (in New Zealand) Security Intelligence Service
[1825–35, Amer.; shortened form]
a suffix appearing in loanwords from Greek, where it was used to form from verbs abstract nouns of action, process, state, condition, etc.: aphesis; thesis.
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|Noun||1.||sis - a female person who has the same parents as another person; "my sister married a musician"|
big sister - an older sister
female sibling - a person's sister
little sister - a younger sister