Reprovingly
/rɪˈpruːvɪŋli/
Definition 1 of 1
Pro Tip 1/3Expressing Disapproval
Use 'reprovingly' to express that you think someone's action is wrong, without being harsh. 
He glanced at her reprovingly for talking during the movie.
Pro Tip 2/3Non-verbal Cues
'Reprovingly' often accompanies non-verbal signs of disapproval, like frowning or sighing. 
She sighed and looked at him reprovingly as he reached for another cookie.
Pro Tip 3/3Not Always Verbal
The word can describe actions, too, not just verbal comments or expressions. 
The teacher shook her head reprovingly at the unruly class.