Category:Placeholder terms by language

English
Here are some such words from English.

sorted by number of Google hits

 * widget
 * hickey
 * gizmo
 * thingy
 * gimmick
 * thingie
 * jigger
 * gismo
 * gubbins
 * whatsit
 * thingamajig
 * doodad
 * whachamacallit
 * whatchamacallit
 * doohickey
 * thingo
 * thingamabob
 * thingummy
 * whatsis
 * dohickey
 * thingumajig
 * whatsaname
 * thingumabob
 * whachacallit
 * whatchacallit
 * thingmabob
 * dojigger
 * thingmajig
 * thingummyjig
 * kajigger
 * dooverlacky
 * doovalacky
 * doofer

Other languages

 * French: machin, truc, trucmuche , bidule, engin , cossin , affaire , schmilblick
 * German: Dingsbums
 * Norwegian: dings, greie
 * Portuguese: coisa, troço, negócio, bagulho, trem, esquema, treco, lance
 * Russian: вещь, штуковина, штука, фиговина, хреновина
 * Swedish: manick, mojäng, grej, grunka, tingest, tjofräs, pryl, pryttel, grejsimoj
 * Turkish: dalga