un·let·tered 
(ŭn-lĕtərd)
(ŭn-lĕtərd)adj.
1.
a. Not adept at reading and writing; deficient in the knowledge that can be acquired from books.
b. Illiterate.
2. Having no lettering: a plain, unlettered T-shirt.
- merchant marine
- merchant mariner
- Mercia
- Mercian
- Mercier Philip
- merciful
- mercifully
- mercifulness
- merciless
- mercilessly
- mercilessness
- mercur-
- mercur-
- mercurate
- mercuration
- mercurial
- mercurialism
- mercurially
- mercuric
- mercuric chloride
- mercuric sulfide
- mercuro-
- mercurochrome
- mercurous
- mercurous chloride