SIS Meaning

SIS means “Sister“. Answer to What does SIS mean is “Sister”. This Page tells the meaning and definition of Slang word SIS.

What does SIS Mean?

SIS mean “Sister”. This is the exact meaning of the English Slang word SIS.

SIS Meaning/Definition

The Exact meaning of SIS is “Sister”. Or, You can say that,

The Definition of SIS is “Sister”.

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