knottiest
Webster's Dictionary (GCIDE)
1.Full of knots; knotted; having many knots; as, knotty timber; a knotty rope. [1913 Webster]
2.Hard; rugged; as, a knotty head. [R.] --Rewe. [1913 Webster]
3.Difficult; intricate; perplexed. [1913 Webster]
A knotty point to which we now proceed— Pope.[1913 Webster]