wéini

Etymology
From, , , from , + ; compare 🇨🇬, obsolete 🇨🇬. Ultimately equivalent to +.

The Luxembourgish -éi- is irregular (as if from ), perhaps from emphatic usage, in which the disyllabic form was preferred. Luxembourgish later lost the monosyllabic form altogether (as did Dutch).

Adverb

 * 1)  when