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

• calibers
• calibrate
• calibrated
• calibrated airspeed
• calibrates
• calibrating
• calibration
• calibrations
• calibrator
• calibrators
• calibre
• calibred
• calibres
• calices
• caliche
• caliches
• calicivirus
• calicle
• calicles
• calico
• calico-bush
• calico-bushes
• calicoes
• calico-flower
• calico-printing