| SIS | express or utter with a hiss |
|---|---|
| SIS | having unsuitable feminine qualities |
| SIS | the trait of being effeminate (derogatory of a man) |
| SIS | East Indian tree whose leaves are used for fodder |
| SIS | East Indian tree whose leaves are used for fodder |
| SIS | a timid man or boy considered childish or unassertive |
| SIS | having unsuitable feminine qualities |
| SIS | having unsuitable feminine qualities |
| SIS | (slang) sometimes used as a term of address for attractive young women |
| SIS | a female person who is a fellow member of a sorority or labor union or other group |
| SIS | a female person who has the same parents as another person |
| SIS | being associated as a companion or associate |