In Proto-Radic, the suffix required the light stem, a remnant of the Laenkean zero-grade, a system which also survived inconsistently into Old Radestrian.
From Old Radestrian -air, from Proto-Radic *-awir, from Proto-Hirdic *-ákhwis, from Proto-Laenkean *-ń̥k(ʰ)we-(small part of).
From Middle Radestrian ajēss, from Old Radestrian ajējre, from Proto-Radic *ajējir, from Proto-Hirdic *aḵéḡiṯis, from Proto-Laenkean *m̥k-ég-et-, from the Proto-Laenkean root *mak-(older female relative).
From Middle Radestrian ajjuns, from Old Radestrian ajjŭns, from Proto-Radic *ajjıns(skin), from Proto-Hirdic *ap̄iḡɯ́nɯs, from Proto-Laenkean *m̥<pi>g-ɯ́n-, from the Proto-Laenkean root *mɯg-(to shine).
From Middle Radestrian aíș, from Old Radestrian aīšjer, from Proto-Radic *aēr, *aīšjir, from Proto-Hirdic *aḡéḡis, from the Proto-Laenkean root *m̥g-ég-, from the Proto-Laenkean root *mag-(four).