Greek word
áphrōn
ἄφρων
What it means
properly, mindless, i.e. stupid, ignorant, egotistic, rash, or unbelieving
properly, mindless, i.e. stupid, (by implication) ignorant, (specially) egotistic, (practically) rash, or (morally) unbelieving
Where it comes from
from A (Α) (as a negative particle) and phrḗn (φρήν)