narrow-minded

adjective

1. having or showing a prejudiced mind, as persons or opinions; biased.
2. not receptive to new ideas; having a closed mind.

adjective

1. having a biased or illiberal viewpoint; bigoted, intolerant, or prejudiced

adj.also narrow minded, 1620s, from narrow (adj.) + minded. Related: Narrow-mindedness. Middle English had narrow-hearted “mean, ungenerous, ignoble” (c.1200).