sis
[ sis ]
/ sɪs /
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noun Informal.
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Which of the following nouns has an irregular plural form?
Origin of sis
Other definitions for sis (2 of 2)
-sis
a suffix appearing in loanwords from Greek, where it was used to form from verbs abstract nouns of action, process, state, condition, etc.: thesis; aphesis.
Origin of -sis
From Greek
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Based on the Random House Unabridged Dictionary, © Random House, Inc. 2022
How to use sis in a sentence
British Dictionary definitions for sis (1 of 3)
British Dictionary definitions for sis (2 of 3)
sis2
sies
/ (sɪs, siːs) /
interjection
Southern African informal an exclamation of disgust
Word Origin for sis
Afrikaans, possibly from Khoi
British Dictionary definitions for sis (3 of 3)
SIS
abbreviation for
Also called: MI6 (in Britain) Secret Intelligence Service
(in New Zealand) Security Intelligence Service
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
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