serious

Entry Definition
s/he has or makes serious expression (on face)
s/he doesn't take it seriously, finds it unconvincing, finds it uninteresting (what is being said)
s/he does not take h/ seriously, s/he finds h/ unconvincing or uninteresting (listening to what another person says)
it is weighty or serious matter, it is a matter of grave importance
it is heavy; it is a grave or serious matter