Envelope
Envelope noun - A flat (usually rectangular) container for a letter, thin package, etc..
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Synonyms for Envelope
Sheaths and envelope are semantically related In some cases you can replace term "Sheaths" with "Envelope", this nouns are similar.
Sheaths
Cite this Source
Sheaths and Envelope. (2016). Retrieved 2026, July 22, from https://thesaurus.plus/related/envelope/sheaths
Envelope & Sheaths. N.p., 2016. Web. 22 Jul. 2026. <https://thesaurus.plus/related/envelope/sheaths>.
Sheaths or Envelope. 2016. Accessed July 22, 2026. https://thesaurus.plus/related/envelope/sheaths.
Google Ngram Viewer shows how "envelope" and "sheaths" have occurred on timeline