sternly
stern-ly
adverb
In a strict, serious, or disapproving manner, often showing authority.
"The teacher looked sternly at the misbehaving pupil."
Thesaurus
Synonyms: severely
stern-ly
In a strict, serious, or disapproving manner, often showing authority.
"The teacher looked sternly at the misbehaving pupil."
Synonyms: severely