a. 1. Literate; educated; versed in literature. “ Are you not lettered?” Shak. [ 1913 Webster ]
The unlettered barbarians willingly accepted the aid of the lettered clergy, still chiefly of Roman birth, to reduce to writing the institutes of their forefathers. Milman. [ 1913 Webster ]
2. Of or pertaining to learning or literature; learned. “ A lettered education.” Collier. [ 1913 Webster ]
3. Inscribed or stamped with letters. Addison. [ 1913 Webster ]