Letter
Letter noun - A message on paper from one person or group to another.
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Synonyms for Letter
X and letter are semantically related. In some cases you can replace term "X" with "Letter", this nouns are similar.
X
Cite this Source
X and Letter. (2016). Retrieved 2026, August 14, from https://thesaurus.plus/related/letter/x
Letter & X. N.p., 2016. Web. 14 Aug. 2026. <https://thesaurus.plus/related/letter/x>.
X or Letter. 2016. Accessed August 14, 2026. https://thesaurus.plus/related/letter/x.
Google Ngram Viewer shows how "letter" and "x" have occurred on timeline