Some dictionary definitions:http://dictionary.reverso.net/english-definition/bigot
♦ bigot n(oun)
- a person who is intolerant of any ideas other than his or her own, esp. on religion, politics, or race
(C16: from Old French: name applied contemptuously to the Normans by the French, of obscure origin)
♦ bigoted adj
English Collins Dictionary - English Definition
dogmatist, fanatic, persecutor, sectarian, zealot
Oxford English Dictionary
1. A religious hypocrite
; (also) a superstitious adherent of religion. Obs
2. a. A person considered to adhere unreasonably or obstinately to a particular religious belief, practice, etc.
–b. In extended use: a fanatical adherent or believer; a person characterized by obstinate, intolerant, or strongly partisan beliefs.
B. adj. (attrib.). Of or characteristic of a bigot; bigoted. Also fig. Now rare.