- in a serious manner or to a serious degree: she looked at me seriously; to be seriously injured in an accident
- really; actually; indeed: are you seriously going to drive in this weather?
- sincerely: do you seriously believe he'll win?
- Slang to a great degree; very: seriously rich fudge brownies
Informal indeed; really: used for emphasis or to express surprise, skepticism, sarcasm, etc.
to regard or treat as important, serious, challenging, etc.
(comparative more seriously, superlative most seriously)
serious + -ly