Question

6400 (informalhttps://en.wiktionary.org/wiki/Appendix:Glossary#informal) something for which one does not know or cannot recall the name, whatchamacallithttps://en.wiktionary.org/wiki/whatchamacallit, thingumabobhttps://en.wiktionary.org/wiki/thingumabob, doohickeyhttps://en.wiktionary.org/wiki/doohickey  wikt [View on Wiktionary]https://en.wiktionary.org/wiki/umo#Esperantoumo Etymology Back-formationhttps://en.wiktionary.org/wiki/Appendix:Glossary#back-formation from -um-https://en.wiktionary.org/wiki/-um-#Esperanto.  Pronunciation      Audio         (filehttps://en.wiktionary.org/wiki/File:LL-Q143_(epo)-Robin_van_der_Vliet-umo.wav)     Noun umo (accusative singular umonhttps://en.wiktionary.org/wiki/umon#Esperanto, plural umojhttps://en.wiktionary.org/wiki/umoj#Esperanto, accusative plural umojnhttps://en.wiktionary.org/wiki/umojn#Esperanto)   (informalhttps://en.wiktionary.org/wiki/Appendix:Glossary#informal) something for which one does not know or cannot recall the name, whatchamacallithttps://en.wiktionary.org/wiki/whatchamacallit, thingumabobhttps://en.wiktionary.org/wiki/thingumabob, doohickeyhttps://en.wiktionary.org/wiki/doohickey   Donu al mi tiun umon.   Give me that thingiehttps://en.wiktionary.org/wiki/thingie.

Accepted Answer

umo null

Umo Recall Accusative Plural Null Wikt Etymology Pronunciation

umo

Etymology

Pronunciation

Noun