Uncertain. Possibly a clipping of malimończyk, marymontczyk (“student/professor/baked good from Marymont”), itself probably from French Mariemont (“Mount Mary”), where the element was influenced by a dialectal pronunciation of the prefix anty- (dialectally ancy-), which often has a negative connotation, with sound changes being marymontczyk -> marymon -> ancymon. First attested in 1914.
Compare Belarusian манцымонтка (mancymóntka, “coquette”), Belarusian малімонік (malimónik, “someone cuddly; someone with sweet tooth; someone capricious”), Ukrainian анцимонек (ancymonek), манцимонек (mancymonek, “an untrustworthy man”).
ancymon m pers (diminutive ancymonek)
| singular | plural | |
|---|---|---|
| nominative | ancymon | ancymoni/ancymony (deprecative) |
| genitive | ancymona | ancymonów |
| dative | ancymonowi | ancymonom |
| accusative | ancymona | ancymonów |
| instrumental | ancymonem | ancymonami |
| locative | ancymonie | ancymonach |
| vocative | ancymonie | ancymoni |