from Α (as a negative particle) and νοιέω; not to know (through lack of information or intelligence); by implication, to ignore (through disinclination):--(be) ignorant(-ly), not know, not understand, unknown.
probably from the base of γινώσκω; the intellect, i.e. mind (divine or human; in thought, feeling, or will); by implication, meaning:--mind, understanding. Compare ψυχή.