noun. ['ˈdɛdənɪŋ, ˈdɛdnɪŋ'] the act of making something futile and useless (as by routine).
Rhymes with Deadening
Sentences with deadening
1. Verb, gerund or present participle
Cut five pieces of sound deadening that match the Styrofoam rectangles, one for each wall of the box.
2. Noun, singular or mass
Sound deadening is a material made to soften sound; it is often used in cars.
adjective. ['ˈdɛdənɪŋ, ˈdɛdnɪŋ'] so lacking in interest as to cause mental weariness.