serious
//ˈsɪriəs//
Adjective
seriousCanonical form
more seriousComparative
most seriousSuperlative
1
Solemn or thoughtful in character or manner; not joking or playful.
She had a serious expression on her face during the meeting.
2
Requiring careful consideration or attention; important or significant.
We need to have a serious discussion about your future.
3
Causing concern or worry; potentially dangerous or harmful.
He has a serious health problem.
4
Sincere and genuine in intention or commitment; not casual or superficial.
Are you serious about learning Japanese?