Wikipedia
Poglish, Polglish or Ponglish (in Polish, often rendered "Polglisz"), a portmanteau of " Polish" and " English," designates the product of macaronically mixing Polish- and English-language elements ( morphemes, words, grammatical structures, syntactic elements, idioms, etc.) within a single speech production, or the use of " false friends" and of cognate words in senses that have diverged from those of the common etymological root.
Such combining or confusion of Polish and English elements, when it occurs within a single word, term or phrase (e.g., in a hybrid word), may, inadvertently or deliberately, produce a neologism.
Poglish is a common phenomenon among persons bilingual in Polish and English. Poglish is a manifestation of a broader phenomenon, that of language interference.
As is the case with the mixing of other language pairs, the results of Poglish speech (oral or written) may sometimes be confusing, amusing or embarrassing.
Variant names for this linguistic melange include "Polglish", "Pinglish" and "Ponglish". A term sometimes used by native Polish-speakers is "Half na pół" ("Half-and-half").