innocuously 

in a manner that is not harmful or unpleasant.

it starts innocuously enough - forgetting where you put your keys, not being able to remember a face, not being able to pronounce a word..

innocuously by ljyyyyy September 14, 2016

innocuous 

Having no harmful effects
Not likely to offend or provoke to strong emotion; insipid.

Ordering rice instead of dog meat is a more innocuous choice when dining out.

innocuous by Excel May 13, 2005