1. superlative form of creepy; most creepy; causing an unpleasant feeling of fear or unease
Usage: informal; superlative degree
2. superlative form of creepy; having a texture like crepe; thin and wrinkled
Usage: informal; superlative degree; textile/fabric context

Examples

• That abandoned house is the crepiest place in town.
• The old doll had the crepiest expression on its face.
• His behavior at the party was the crepiest thing I've ever witnessed.
• The fabric had the crepiest texture, almost like tissue paper.
• That horror movie was the crepiest film I've seen all year.
• The crepiest part of the story was when the lights went out.