whatsis

and whatsit and whatzit and whazzit (ˈʍətsɪs and ˈʍətsɪt and ˈʍətsɪt and ˈʍəzɪt)

n. a name for a person or thing whose real name has been forgotten or is being avoided. Put this little whatzit on the top and another on the bottom.

Name	Pronounced	Usage
Anstie	['ænsti]
Toril	-	Norwegian
Stig	-	Swedish, Norwegian, Danish
Quim	-	Portuguese, Catalan
Crowley	['krəuli:]
Columbanus	-	Late Roman