उदास на английском языке:

David’s morose nature made him very unpleasant to talk to.

After Stanley found out he was no longer able to go on vacation with his friends, he sat in his room morosely.

unhappy, ​annoyed, and ​unwilling to ​speak or ​smile: a morose ​expression Why are you so morose these ​days?

Why are you so morose these days?

... Times" has become increasingly morose and the world's broadcasts...

he replied sullenly

sullen skies that matched our mood on the day of the funeral

His daughters stared back at him with an expression of sullen resentment.

My grandpa was bad-tempered but definitely not sullen