einai (Greek #1511)
to exist
KJV usage: am, was. come, is, X lust after, X please well, there is, to be, was.
Pronounce: i'-nahee
Origin: present infinitive from 1510
aphron (Greek #878)
properly, mindless, i.e. stupid, (by implication) ignorant, (specially) egotistic, (practically) rash, or (morally) unbelieving
KJV usage: fool(-ish), unwise.
Pronounce: af'-rone
Origin: from 1 (as a negative particle) and 5424