Make less effective, 6 letters
Render dysfunctional, 6 letters
Hammered or plastered, 8 letters
Husband or wife's statement?, 8 letters
Limited, as hearing, 8 letters
Not 100%, as hearing, 8 letters
It only makes things worse, 8 letters
Prankster, on weakening (9), 9 letters
Make Michael mortal?, 12 letters
Makes less effective, 7 letters
Vandalizes the rink?, 14 letters
The occurrence of a change for the worse, 10 letters
A symptom of reduced quality or strength, 10 letters
Damage that results in a reduction of strength or quality, 10 letters
The act of making something futile and useless (as by routine), 10 letters