from Wiktionary, Creative Commons Attribution/Share-Alike License
- adv. In an unexpected manner.
from The Century Dictionary and Cyclopedia
- In an unexpected manner; at a time or in a manner not expected or looked for; suddenly.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- adv. in a way that was not expected
- adv. without advance planning
unexpected + -ly. (Wiktionary)