infructuose

Etymology
.

Adjective

 * 1) Not yielding fruit.
 * 2)  unfruitful; unprofitable
 * 3) * April 1864, Boskousa, "Music of the Future" and "Anticipations" (letter to the editor) in The Musical World
 * I am too irritable to listen to Wagner's music; in my opinion it is infructuose