Unraveling the Mystery: The Surprising Family Nickname Crossword Clue

The answer to the crossword question “Family nickname is SIS” is likely to be “Sister.” “Sis” is a commonly used nickname for a sister or a female family member. In many families, siblings often use nicknames to refer to each other, and “Sis” is a popular one for a sister. It is a term of endearment and familiarity that adds a personal touch to family relationships. Overall, the answer to the crossword question indicates that the puzzle is focusing on family relationships and language commonly used within families.