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- DictionarySIS
abbreviation
- 1. (in the UK) Secret Intelligence Service.
Sis can be a noun meaning sister, an abbreviation for Secret Intelligence Service, or a suffix for process or action. Learn the etymology, usage, and examples of sis from Merriam-Webster.
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SIS can mean sister, a female friend, or strategic information system. Learn how to use this word in different contexts with examples from various sources.
Sis definition: sister. . See examples of SIS used in a sentence.
2 days ago · sis: 1 n a female person who has the same parents as another person Synonyms: sister Antonyms: blood brother , brother a male with the same parents as someone else Types: big sister an older sister little sister a younger sister half sister , half-sister , stepsister a sister who has only one parent in common with you Type of: female sibling a ...
Sis is an informal word for sister, or a noun suffix for forms of action or condition. It can also be an abbreviation for Secret Intelligence Service.
Learn the meaning of sister as a noun, with synonyms, examples, and word history. Sister can refer to a female relative, a member of a religious order, a comrade, or a similar person.
Define sis. sis synonyms, sis pronunciation, sis translation, English dictionary definition of sis. n. Informal Sister. American Heritage® Dictionary of the English ...
