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

• magnificently
• magnifico
• magnificoes
• magnified
• magnifier
• millionairess
• millionairesses
• millionary
• millionfold
• millions
• millionth
• millionths
• milliped
• millipede
• millipedes
• millipeds
• milliprobe
• milliprobes
• millirem
• millirems
• millisecond
• milliseconds
• millisievert
• millisieverts
• millième