6
postcard(noun, communication, line, dispatch, correspondence)
6
reply(noun, communication, wave, dispatch, greeting)
6
word(noun, communication, mark, note, line)
5
alphabet(noun, character, symbol)
5
cap(noun, character, symbol)
5
capital(noun, character, symbol)
5
card(noun, note, line, welcome, indication)
5
letters
5
literature
5
mail(noun, system)
5
minuscule(noun, character, symbol, uncial)
5
monogram(noun, type, mark, character, sign)
5
paper(noun, literature, text, communication, note)
5
print(verb, make, mark, produce, note)
5
write(verb, check, mark, put, stain)
5
writing
4
alphabetic character(noun, expression, idiom)
4
chit(note, correspondence, acknowledgment, memo)
4
cipher(noun, type, mark, character, sign)
4
document(noun, verb, literature, text, work)
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APASmart Define. (2015). letter thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/letter/thesaurus/synonyms
ChicagoSmart Define. 2015. "letter thesaurus" https://smartdefine.org/letter/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2015, letter thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/letter/thesaurus/synonyms>.
MLASmart Define. "letter thesaurus" 10 April 2015. Web. 22 September 2026. <https://smartdefine.org/letter/thesaurus/synonyms>