Pronunciation: (sēr'ē-us-lē), [key]
1. in a serious manner: He shook his head seriously.
2. to an alarmingly grave extent: seriously ill.
3. with genuine, earnest intent; sincerely: Seriously, kids, we have to get home before dark.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.