littĕrālis — Lewis & Short
littĕrālis (lītĕr-), e, adj.littera,
I of or belonging to letters or writing (postclass.):
commercium,epistolary correspondence, Symm. Ep. 4, 52:
lectio,the reading of books, Cael. Aur. Tard. 1, 5:
grammatica litteralis dicta, quod a litteris incipiat,Diom. p. 414 P.