zealot - A fanatical person who is unyielding in their spiritual or political pursuits.
Juliet went into the hills alone to seek God, even though her friends called her a crazy zealot. She later testified that speaking to God in the storm was a profoundly healing experience.
intolerant - Refusing to allow others to do or believe things that you don't agree with.
When people try to dialog with others, and both are intolerant of each others' points of view, it often just degenerates into a shouting match, with neither side listening.
negligible - So small or unimportant that it can be ignored or doesn't have a noticeable effect; insignificant in amount, size, or impact — too minor to be worth considering.
The difference in price was negligible, so she bought with the higher-quality option.
