poetic licence

poetic licence (US license), the imaginative and linguistic freedom granted to poets, allowing them to depart from normal prose standards of factual accuracy, syntax, grammar, or pronunciation where this may produce a more satisfying imaginative or metrical effect. Depending upon prevailing aesthetic conventions, this may permit the use of elision or of syntactic inversion to fit the metre of a line, of eye rhyme or broken rhyme to fit a rhyme scheme, of unusual diction, of illogical figures (e.g. catachresis, hyperbole), or of other imaginative ‘liberties’ ranging from personification and the pathetic fallacy to inaccuracies of chronology ( anachronism), geography, or natural science.