seriously
1 adv You use seriously to indicate that you are not joking and that you really mean what you say.
Seriously, I only smoke in the evenings.
2 convention You say `seriously' when you are surprised by what someone has said, as a way of asking them if they really mean it.
SPOKEN, feelings `I tried to chat him up at the general store.' He laughed. `Seriously?'
4 If you take someone or something seriously, you believe that they are important and deserve attention.
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take sb/sth seriously phrase
It's hard to take them seriously in their pretty grey uniforms...