despoetizar

A rare, mostly literary-critical verb meaning to strip something of its poetic or romantic quality, making it plain or prosaic — a critic might say a film despoetiza a classic novel by stripping away its lyricism. It belongs to literature and film criticism, not everyday speech.

• La adaptación despoetiza por completo la novela original. — The adaptation completely strips the original novel of its poetry.
• Algunos críticos acusan al director de despoetizar el mito. — Some critics accuse the director of stripping the myth of its poetic quality.
• El lenguaje técnico despoetiza cualquier descripción del amanecer. — Technical language strips any description of the sunrise of its poetry.

Reaching for despoetizar in ordinary conversation — it's a specialized term from literary/film criticism, not a word an everyday speaker would use describing something merely unromantic or dull.