Related Clues:

• Sis counterpart
• Bro's sib
• Pal, colloquially
• Family nickname
• Affectionate family name
• Cheer opener
• Good buddy
• ''--- boom bah!''
• Palindromic sib
• Girl in the family
• Monastery address
• Familiar sibling title
• Marie, to Donny
• Certain sib
• Family girl, for short