idioglossia /id-i-ō-glosˈi-ə/

1. A condition in which pronunciation is so bad as to be quite unintelligible
2. A private language developed between two or more children, esp twins, etc

• party man
• party men
• party piece
• party pieces
• party plan selling
• party-political
• party politics
• party-pooper
• party-poopers
• party popper
• party poppers
• party sales
• party selling
• party-size
• party spirit
• party-spirited
• party spirits
• party-verdict
• party-verdicts
• party wall
• party walls
• parulis
• parulises
• parure
• parures