The term 'IT'S NOT POETRY' can be solved by the crossword solution PROSE, which is a five-letter word. PROSE is a type of writing that is not poetry and is usually used to communicate facts or opinions. It is typically written in sentences and paragraphs and does not contain any of the poetic devices such as rhyme or meter. PROSE is the most common form of writing and is used in many different genres, including novels, short stories, essays, and non-fiction works.