Verb
waste breath (third-person singular simple present wastes breath, present participle wasting breath, simple past and past participle wasted breath)
(idiomatic) To speak in a manner which is needless or futile; in discussion or argument to make points which are not appreciated or heeded.
Of all kinds of human energy, Art is surely the most free, the least parochial; and demands of us an essential tolerance of all its forms. Shall we waste breath and ink in condemnation of artists, because their temperaments are not our own? John Galsworthy