Answer:
The word you probably want is "averse." It means strongly disinclined.
In this case, it is a negative of the negative, so that "I am not averse to your wishes" means that the speaker has no opposition to a request, i.e is amenable to it.
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The meaning of the word adverse is similarly negative, meaning an unwanted or non-beneficial result, as in "the patient had an adverse reaction to his medication."