(a) Sinful, immoral; (b) of clergy, monks, etc., and their life: not engaged in, or not fully conducive to, the serious quest for spiritual perfection [difficult to distinguish from (a)]; (c) not……

(a) Flat, level, even; of geographic areas: low in elevation, lowland; broad, flat; also, of an engraving: worked in low relief; plain contre (ground, place, thing), a plain, plateau, or lowland……