1. the quality or state of being knotty; having many knots or tangles
2. the quality of being difficult to understand or solve; complexity
Usage: figurative

Examples

• The knottiness of the old rope made it difficult to untangle.
• She struggled with the knottiness of her hair after swimming.
• The knottiness of the legal case required expert analysis.
• The wood’s natural knottiness gave it character and texture.
• He was frustrated by the knottiness of the mathematical proof.
• The knottiness of the problem became apparent only after careful study.