rather
I was deadpan. :) It had to be a joke, but he said it deadpan.
Procrastination is a serious problem here at the office. Everyone procrastinates and then it's a scramble to get the projects done at the end.
the lady was really serious
John is a very serious man This is a very serious matter
"thoughtful not joking" is not a sentence and it does not contain the word "serious". Serious is an adjective, a word that describes a noun. Example: Justin has a serious expression on his face. The adjective "serious" describes the noun "expression".
"Are you serious?"
"They" is the subject of that sentence.
Well, he was a former comedian...If you are good at telling what is being used as sarcasm, and what isn't, then it will be easy to tell weather he is serious or not...
The judge's presence lent a more serious tone to our dinner group. He was serious yesterday.
'I want to be in a serious relationship.'
"this play i serious so act like you care"
There are many people who are serious about school, while others are not.