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

• counterbuffed
• counterbuffing
• counterbuffs
• counter-cast
• counter-caster
• counter-casters
• counter-casts
• counterchange
• counterchanged
• counterchanges
• counterchanging
• countercharge
• countercharges
• countercharm
• countercharmed
• countercharming
• countercharms
• countercheck
• counterchecked
• counterchecking
• counterchecks
• counterclaim
• counterclaimed
• counterclaiming
• counterclaims