Letter for letter

Wiktionary Word definitions in Wiktionary
adv. (context of the copying of text English) letter by letter.

WordNet Word definitions in WordNet
adv. letter for letter; "the message was transcribed literatim"

The Collaborative International Dictionary Word definitions in The Collaborative International Dictionary
Literatim \Lit`e*ra"tim\ (l[i^]t`[-e]*r[aum]"t[i^]m), adv. [LL., fr. L. littera, litera, letter.] Letter for letter.