1. glum
glum silence
He looked glum.
Don't be so glum about it. Life has its ups and downs.
Their glum expressions were an understandable human reaction
Daniel had every reason to be happy, but he still felt glum and couldn’t say why he felt that way.
This, Eli thought glumly, was a classic joke in the making.
He was glum about my refusal.
... feeling a little bit glum and you buy a...
2. moody
I'm always moody.
He's so moody I have trouble keeping up with him.
Everyone is entitled to be moody once in a while.
A moody person is happy one minute and sad the next.
He can be quite moody.
Helen Moody was noted as a tennis player for not showing any expression on the court.
He’s so moody. You never know if he’s going to be happy; sad; or angry. It’s exhausting!
You're very moody today.
I am a moody person, I'm often unfriendly because I feel angry or unhappy.
You’re so moody – I never know what to expect.
I feel sorry for people who are always moody and never look happy.
Teenagers can be very moody. Once they are happy to talk to you and other times you can't even ask them a question because they sulk.
Our teenage son is moody and bad-tempered.
Although he jokes around a lot, he is, in fact, a very moody person.
John has been moody since this morning.