köken: From Middle High German iemer (also imer, immer), from Old High German iomēr (“always”). From io (“always”) + mēr (“more”). Cognate with Dutch immer, Alemannic German immer, German Low German immer, ümmer, jümmer, jümmers, Middle English a mare, aa mare (“evermore”).
aile: immer gleich, immer noch, immer wieder, immer wenn
köken: From Proto-Finnic *aina (compare Estonian aina), probably borrowed from Proto-Balto-Slavic [Term?] (compare Old Prussian ainat (“always, constantly”) and Lithuanian vienàt (“only”)).