from Wiktionary, Creative Commons Attribution/Share-Alike License
- adv. In a spontaneous manner; naturally; voluntarily.
from The Century Dictionary and Cyclopedia
- In a spontaneous manner; with spontaneity.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- adv. in a spontaneous manner
- adv. without advance preparation
spontaneous + -ly (Wiktionary)