I learned the word "dub-dub" the other day meaning
moron in Amharic.
After a couple of searches I found this page which says:
Duhduhb = Moron
I tried having a stab at how it might be written, properly, in Amharic based off of the Alphasyllabary on Wikipedia and came up with something like: ዱዱቧ. But, it seems I'm way off base.