1) Grimly 2) Grumpily 3) Harshly 4) Severely 5) Sourly 6) Violently 1) How scoldings are given 2) How some warnings are given 3) How the riot act is read 4) How to give a reprimand 5) In a heavy-handed manner 6) In a no-nonsense manner 7) In a severe manner 8) In a strict manner 9) In a tough way 10) In an exacting fashion 11) In an unyielding fashion 12) One way to give a reprimand 
• (adv.) In a stern manner.
Stern'ly adverb In a stern manner. 
[adv] - with sternness
adverb with sternness; in a severe manner; ``No,` she said sternly`; `peered severely over her glasses`