As an adjective lettered
is literate (able to read writing in letters).
As a verb lettered
is simple past of letter.
As a noun letterer is
a person who is professionally employed to add writing to something (as a sign, shop window, etc..
lettered
English
Adjective
(head)
Literate (able to read writing in letters).
Educated, especially having a degree (entitled to put an abbreviation such as BS, MA, PhD, MD after a signature).
Verb
letters
(letter)
letterer
English
Noun
(
en noun)
A person who is professionally employed to add writing to something (as a sign, shop window, etc.)
A particular profession in the production of comics, an artist specializing in neatly writing written material such as dialogue.
A device for printing letters of text.