Part of the fam Crossword Clue

 Yes, the answer to the crossword clue "Part of the fam" could be SIS.

The word "sis" is a slang term for sister. It is a good choice for the crossword clue because it is a short and informal way to refer to a sibling.

Here are some other possible answers to the crossword clue:

BRO

FAM

KIN

REL

FAMILY

The best answer will depend on the context of the clue and the other words in the puzzle. However, I believe that "SIS" is the most likely answer, given its relationship to family.

I hope this helps! Let me know if you have any other questions.