from Wiktionary, Creative Commons Attribution/Share-Alike License
- adv. In an unmistakable manner; unquestionably.
from The Century Dictionary and Cyclopedia
- In an unmistakable manner; so as not to be mistaken. Also unmistakeably.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- adv. in a signal manner
- adv. without possibility of mistake
unmistakable + -ly (Wiktionary)