casualism

plural casualisms

1. uncountablehuman sciencesThe doctrine that all things exist, or are based on, randomness.
2. countableA casual (informal) word or phrase.

   Avoid casualisms when writing business letters.

   1 more example

   Try and is, in AmE, a casualism for try to […] In BrE, however, try and is a standard idiom.

   2000, The Oxford Dictionary of American Usage and Style, page 335

   Synonyms: colloquialism

3. countableuncountableartAn art movement characterized by an unpolished esthetic, incorporating such elements as rough or torn edges, exposed staples, etc.