noun
improvisational poet; improviser (poet)
Refers specifically to a poet who improvises verses, often in a performance or competition setting. Not a general term for any improviser.
彼は即興詩人として、その場で詩を作り上げた。
As an improvisational poet, he composed a poem on the spot.
Compound of 即興 (improvisation) and 詩人 (poet). The exact historical derivation is uncertain, but the term likely emerged in literary or performance contexts.