Synonyms of the word 
OBTUSENESS → BLUNTNESS - DULLNESS - STUPIDITY
obtuseness
- n. The quality of being obtuse.
- n. Something that is obtuse.
bluntness
- n. The characteristic of being blunt.
dullness
- n. The quality of being slow to understand things.
- n. The quality of being uninteresting.
- n. The lack of visual brilliance.
- n. (of an edge) bluntness.
stupidity
- n. (uncountable) The property of being stupid.
- n. (countable) An act that is stupid.
If you are interested in words, visit the following sites :
- wiktionary.org/obtuseness For complete definition of a word
- 1word.ws/obtuseness to play with words, suffixs, prefixs, etc.