intolerant

Short definition from Wiktionary

Adjective

1. 1
   Unable or indisposed to tolerate, endure or bear.
2. 2
   Not tolerant; close-minded about new or different ideas; indisposed to tolerate contrary opinions or beliefs; impatient of dissent or opposition; denying or refusing the right of private opinion or choice in others; inclined to persecute or suppress dissent.

Noun

1. 1
   One who is intolerant; a bigot.