phantonym.
A word that appears to mean one thing but actually means something else. Such terms are predisposed toward catachrestic use (including malapropisms) by speakers and writers.
Meaning & usage
A word that appears to mean one thing but actually means something else. Such terms are predisposed toward catachrestic use (including malapropisms) by speakers and writers.
Where this word comes from
From phant(om) + -onym, with self-aware influence from antonym; Macmillan Dictionary reports that corpus searches have found that the word seems to have been coined several times [probably independently], with several meanings all related to wordplay, accidental gaps, or catachresis, as long ago as 1993 (by Irwin M. Berent, referring to comical neologisms such as bebig, analogous to embiggen) and most recently in 2009, by Jack Rosenthal, as an -onym term for words whose sound or appearance makes them liable to be used catachrestically.
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Definitions, grammatical labels, IPA, etymology and examples: Wiktionary contributors, extracted by Kaikki / Wiktextract. Adapted under CC BY-SA 4.0. Selected fields and authored examples are shown; third-party quotations and audio are omitted. See contributor history.
Last enriched 2026-09-10. Definitions are in English. Romanizations are shown when supplied by the source; syllable estimates are omitted for unsupported scripts.