From Wiktionary, the free dictionary

From allo- (“other, different”) +‎ -onym (“name”), probably via French allonyme. Compare German allonym, Allonym. First attested in 1725.

• (Received Pronunciation) IPA^(key): /ˈal.əˌnɪm/
• (General American) IPA^(key): /ˈæl.əˌnɪm/

allonym (plural allonyms)

2. A pseudonym, (particularly) another person's name used as a pseudonym by the author of a work.

   Antonyms: autonym; orthonym, alethonym

4. (uncommon) An allonymous work: a book published under the name of a person other than its true author.

   Antonym: autonym

• allonymous

• apocrypha, apocryphal works

• “allonym, n.”, in OED Online ⁠, Oxford: Oxford University Press, launched 2000.

• malonyl

Categories:

• English terms prefixed with allo-
• English terms suffixed with -onym
• English terms borrowed from French
• English terms derived from French
• English 3-syllable words
• English terms with IPA pronunciation
• English lemmas
• English nouns
• English countable nouns
• English terms with uncommon senses
• English terms suffixed with -nym