Doumaflage 

Noun, French slang: a placeholder word to describe a person when you can’t think of their name

“Ah c’est quoi son nom? Doumaflage me doit de l’argent!”

Hey what’s his name? Doumaflage owes me money!

Doumaflage by MisterTPK April 29, 2021

dumaflagy 

Used in colloquial speech in place of an unknown or forgotten noun.

I attached the doohickey to the thingamabob, but I couldn't figure out where the dumaflagy was supposed to go.

dumaflagy by QDK January 1, 2009

doomaflagie 

It's the thingamajigger by the whatchamacallit
In a place you've never been, none of it makes any sense but there it is.

You know what I mean, it's the thingamajigger by the doomaflagie

doomaflagie by Pearlished February 3, 2024