Dictionary and Thesaurus

Definition of Sis

• (n.) A colloquial abbreviation of Sister.
• (n.) Six. See Sise.

Synonyms of Sis

• Sister
• Silicon
• Si
• Atomic Number 14
• Systeme International D'unites
• Systeme International
• SI System
• SI
• SI Unit
• International System Of Units
• International System
• Ti
• Te
• Si

Antonyms of Sis

• Brother

Homophones of Sis