overconfidence
over·con·fi·dence
noun
1.
total certainty or greater certainty than circumstances warrant
Origin
From over- + confidence.
Related words
Broader terms
WordNet 2.1 (Princeton University). Wiktionary (CC BY-SA). CMU Pronouncing Dictionary. WordNet 2.1 Copyright Princeton University. All rights reserved. Wiktionary content is available under the Creative Commons Attribution-ShareAlike Licence.