noun
poetic license
A literary term referring to the freedom to deviate from conventional rules of language, grammar, or fact for artistic effect in poetry.
詩的破格は、詩人が文法や事実を自由に扱うことを許す。
Poetic license allows poets to freely handle grammar and facts.
From 詩的 (poetic) + 破格 (irregularity, exception). A calque of English 'poetic license'.