adj. presumptuous, cocksure, rude and disrespectful.
the GNU version of the Collaborative International Dictionary of English
adj. Confident to excess.
The Century Dictionary and Cyclopedia
Confident to excess.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
adj. marked by excessive confidence
Word Usage
""What they've done by foolishly acting so arrogant and overconfident is that they've basically put out the warning signal, and I am finding that people are very ready to overcome this.""