Wiktionary
deadeningly
adv. In a deadening manner.
Usage examples of "deadeningly".
THREE OFFICES ON THE ADMINISTRATION SUBLEVEL OF MOONBASE tended to be deadeningly silentor soothingly so, depending upon one's viewpoint.
The purple curtain between him and the sinner stirred slightly with the expelled litany of offenses, by now so deadeningly dull and trivial to the priest's ears that he grew angry at their plaintive insistence.
Her stepfather had taken to denouncing her various interests as unrealistically ambitious or occasionally as deadeningly trivial.