adversely
adverb
ad·verse·ly ad-ˈvərs-lē
ˈad-ˌvərs-
: in an adverse manner : in a way that is bad or harmful
—often used with affect
Determining which drugs—if any—may have interacted adversely with others is difficult.—
Nancy Ann Jeffrey and Robert Langreth
Reductions in staffing are affecting the company adversely.
Taking a loan from your retirement account may adversely affect your retirement savings, but there are instances when taking such a loan makes sense.—
Denise Appleby
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Merriam-Webster unabridged



