“So now it becomes apparent that in addition to being a liar, you are also a clueless mass of obtuseness.”

“Change the Climate's web page reveals nothing unique or provocative except extraordinarily distressing obtuseness.”

“His career rose on a chic, combustible mix of obtuseness and literary flimflam.”

“Due to her obtusity, she failed to grasp the subtle nuances of the poem.”

“What kind of willful obtusity ever suggested that subprime mortgages were a good idea?”

“In this context the law ought not to give an advantage to obtusity.”