obtuseness
ob·tu·se·ness
noun
1.
the quality of being slow to understand
Origin
From obtuse + -ness.
Related words
Narrower terms
WordNet 2.1 (Princeton University). Wiktionary (CC BY-SA). WordNet 2.1 Copyright Princeton University. All rights reserved. Wiktionary content is available under the Creative Commons Attribution-ShareAlike Licence.