Correct spelling for the English word "dunce seefool" is [dˈʌns sˈiːfuːl], [dˈʌns sˈiːfuːl], [d_ˈʌ_n_s s_ˈiː_f_uː_l] (IPA phonetic alphabet).
The term "dunce" originated in the late 16th century, deriving from the name John Duns Scotus, a medieval scholar. He was a prominent philosopher and theologian who belonged to the Franciscan Order. However, as the Renaissance brought about a shift in intellectual thought, Scotus' ideas fell out of favor among scholars. Since his followers were perceived as being overly pedantic and stubborn in defending Scotus' doctrines, the term "dunce" gradually came to represent someone who was ignorant or unintelligent.
"Seefool" is not a recognized word in English, so there is no specific etymology for it. It is possible that it was a typographical error or a misspelling of another word.