Being bigheaded can be as irritating and as dangerous as being small-minded.

above oneself aphorism aphorisms aphorist aphorists arrogance arrogant bigheaded bigoted bigotry blinkered close minded cocksure cocky complacent conceit conceited conservative danger dangerous dyed in the wool full of oneself funny hidebound hilarious humor humorous humour illiberal inflexible insular intolerant inward looking irritate irritating irritation joke jokes mean spirited myopic narrow minded parochial petty pleased with oneself prejudiced provincial puffed up satire self important self satisfied set in one s ways shortsighted small minded small town smug too big for one s boots too big for one s britches uncharitable unimaginative vain vainglorious vanity