"men and women of letters; the learned class as a whole," 1620s, noun use of Latin literati/litterati, plural of literatus/litteratus "educated, learned" (see literate). The proper singular would be literatus (fem. literata), though Italian literato sometimes is used in English.
literalist
literality
literally
literary
literate
literati
literation
literature
lith
-lith
litharge