Synonyms|15Antonyms|0|Broader|2Narrower|0Related|2
4
aerogram(noun, country)
3
aerogramme(noun, country)
3
airmail letter(noun, country)
2
bull
1
billet-doux
1
dead letter
1
encyclical
1
letter of credit(expression, idiom)
1
letters of marque(expression, idiom)
1
love letter
1
newsletter
1
round robin
0
air-letter
0
airgraph(noun, country)
0
missive
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APASmart Define. (2015). air letter thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/air_letter/thesaurus/synonyms
ChicagoSmart Define. 2015. "air letter thesaurus" https://smartdefine.org/air_letter/thesaurus/synonyms (accessed September 20, 2026).
HarvardSmart Define 2015, air letter thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/air_letter/thesaurus/synonyms>.
MLASmart Define. "air letter thesaurus" 14 April 2015. Web. 20 September 2026. <https://smartdefine.org/air_letter/thesaurus/synonyms>