Answer
`anah (aw-naw')
to eye or (generally) to heed, i.e. pay attention; by implication, to respond; by extens. to begin to speak; specifically to sing, shout, testify, announce
a fool
kciyl (kes-eel')
fat, i.e. (figuratively) stupid or silly -- fool(-ish).
according to his folly
'ivveleth (iv-veh'-leth)
silliness -- folly, foolishly(-ness).
lest he be wise
chakam (khaw-kawm')
wise, (i.e. intelligent, skilful or artful) -- cunning (man), subtil, (un-), wise(hearted), man).
in his own conceit
`ayin (ah'-yin)
an eye; by analogy, a fountain (as the eye of the landscape)