Occasionalism (from Latin: occasionalis - random ) is an individual author's neologism , created by a poet or writer according to the word-formation models existing in the language and used exclusively in the context of this context, as a lexical means of artistic expression or language play. Occasionalisms are usually not widely used and are not included in the vocabulary of a language  .
Examples: large swamps (created according to the model of the word " light forest"), chipsonos (created according to the model of the word "water carrier"), everywhere, everywhere (by analogy with "everywhere"). Examples from English: Crabalocker, eggman.
- Rosenthal D.E. and Telenkova M.A. Dictionary of Linguistic Terms. A manual for teachers. Ed. 2nd, rev. and add. M., "Enlightenment", 1976. 543 p.