It turns red litmus paper blue
I believe the answer is:
base
(Other definitions for base that I've seen before include "Foundation; counterfeit" , "Meanspirited" , "Found - worthless" , "Reprobate" , "centre from which soldiers operate" .)
I believe the answer is:
base
(Other definitions for base that I've seen before include "Foundation; counterfeit" , "Meanspirited" , "Found - worthless" , "Reprobate" , "centre from which soldiers operate" .)