Definition of "illiterate"

If publique Aſſemblies of Divines cannot agree upon a right vvay, private Conventicles of illeterate men, vvill ſoon finde a vvrong. Bivious demurres breed devious reſolutions. Paſſengers to heaven are in haſte, and vvill vvalk one vvay or other.

1647, Theodore de la Guard [pseudonym; Nathaniel Ward], The Simple Cobler of Aggawam in America. […], London: […] J[ohn] D[ever] & R[obert] I[bbitson] for Stephen Bowtell, […], page 37

Ignorant and ſuperſtitious wretches meaſure the actions of letterd and philoſophical men by the tattle of their nurſes or illiterate parents and companions, or by the faſhion of the country : and people of differing religions judge and condemn each other by their own tenents ; when both of them cannot be in the right, and it is well if either of them are.

1722, William Wollaston, “Sect. V. Truths relating to the Deity. Of his exiſtence, perfection, providence, &c.”, in The Religion of Nature Delineated‎, page 81

Now (exc. in Nautical language, see b) it is only dialectal or an illiterate substitute for lie, its identity of form with the past tense of the latter no doubt accounting largely for the confusion.

1908, “lay v.¹”, in James A. H. Murray et al., editors, A New English Dictionary on Historical Principles (Oxford English Dictionary), volume VI, Part 1, London: Clarendon Press, page 128

We might also provide education plus reading and writing services to adult illiterates.

1993, Octavia E. Butler, Parable of the Sower, HEADLINE PUBLISHING GROUP (2019), page 210