Akademik

undern
\\ˈəndə(r)n, ˈu̇n-\ noun (-s)
Etymology: Middle English, third hour of the morning (9:00 a.m.), noon, from Old English; akin to Old High German untarn, untorn noon, Old Norse undorn midafternoon, midmorning, Gothic undaurnimats noon meal, and probably to Old High German untar between, among — more at inter-
1. dialect : the time from noon to sundown : afternoon
2. dialect : a light meal in the forenoon or in the afternoon

Useful english dictionary. 2012.