na-adjective
prosaic; matter-of-fact; unpoetic
Describes something lacking poetic beauty or imagination; often used for writing, speech, or thinking that is plain and literal.
彼の説明はあまりにも散文的で、感動がなかった。
His explanation was too prosaic and lacked any emotional impact.
この詩
This poem has many prosaic expressions.
Antonym: 'poetic'. 散文的 is the opposite, meaning plain or unpoetic.
From 散文 (prose) + 的 (-like, -ish). The combination yields 'prose-like', i.e., prosaic.