With subtleness, in a subtle manner. With cleverness rather than brute force.(adverb)
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Use "subtly" in a sentence
"One gets that disheartening impression that the Caucus posters relish in subtly amplifying the FOX News “flip-flopper” meme."
"Along the way, Stubin subtly reveals how a book's index, though it looks unassuming, should be the product of long and careful thought."
"Of course, consult your doctor first before switching out any medication (especially as some commenters are saying generics can actually vary subtly from the brand name, and some patients can have adverse reactions to different kinds of thyroid meds)."