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serious: grave, dangerous, threatening, severe; formal
Icarus is a very serious person, he rarely laughs and he works very hard.
This problem is very serious and I want it fixed immediately!
This is a serious affair, so please be on your best behavior.
I'm dead serious! I'm completely, entirely, totally serious!

seriously: not jokingly, frankly; gravely, menacingly


  • "But I've got to warn you, these are some pretty serious tough hombres back there."
  • "Philip : OK, OK, OK, seriously, first of all, I hate you guys."
  • "You've only been alive for a matter of months, but I've already had reports of public indecency, aggressive lullaby singing, diaper throwing, tummy aches, temper tantrums, loud crying and some very serious accusations of milk abuse."
  • "No seriously, you're totally elitist."
  • "At our spacious and tranquil retreat, you will find a solution for all your earthly problems. Whether you have a serious alcohol or drug addiction, a troubled marriage, or are just severely disappointed in your gay children, we have a program for you!"
  • "I'm serious!"
  • "Philip : Yeah, I seriously doubt that."
  • "Let's get serious Jonas, how do Scandinavians spend their summers?"
  • "You cannot be serious!"
  • "If we don't get it right, it could SERIOUSLY damage Delavigne's sales next year!"

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