What does the name Sissy mean? The meaning of the name Sissy is Diminutive Form Of Cecilia. The origin of the name Sissy is American. This is the culture in which the name originated, or in the case of a word, the language.
Alternate spellings: Sissa
People who like the name Sissy also like: Eloise
, Miley Oliver
Name Notes: Also a nickname for sister or a person who is cowardly. Sissy Spacek, actress.