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
Vance	VANTS	English
Japik	-	Frisian (Rare)
Jacobo	hah-KO-bo	Spanish
Nelly	NEL-ee	English
StÉPhanie	ste-fa-NEE	French
Marit	-	Swedish, Norwegian