無下 むげ
mugeni

Adverb

1. bluntly (refusing, etc.); flatly; out of hand; completely

ほかならぬ きみ たのみなら、無下 むげには出来 できないだろう。
tanaranu kimino tanominaramu geniwa dekinaidarō
If it's a request from you, I'm hardly likely to be able to turn you down flat.