He was too pigheaded to listen to my suggestion. the kind of pigheaded person who seems to believe that facts only confuse an issue
Recent Examples on the WebCountless efforts to defuse the crisis showed initial promise and then collapsed—Emperor Honorius, based in Ravenna, proved pigheaded and duplicitous. Cullen Murphy, The Atlantic, 9 June 2020 Just five years after the Spurs prompted widespread headlines (and much pigheaded skepticism) by hiring ex-WNBA star Becky Hammon as the first female assistant coach in NBA history, coverage of Toronto's move was relatively muted. Dan Greene, SI.com, 24 Sep. 2019