Reconstruction:Proto-Germanic/-u

Etymology
Possibly from Pre-Germanic, from , which would make it cognate to 🇨🇬, 🇨🇬, 🇨🇬 and 🇨🇬.

Usage notes
This suffix was used when asking yes/no questions or, based on Gothic usage, to present a binary choice between two options. It was attached to the first word in a clause. If the first word was a compound or had a prefix, this suffix was infixed after the first part of a compound or after the prefix, effectively splitting the word in two.