knotty

/ˈnɑti/
adjective
  1. Having many knots; full of lumps or hard spots (especially of wood or rope).
    • The old rope was too knotty to use for climbing.
    • He struggled to cut through the knotty piece of driftwood.
    • The knotty pine board was perfect for the rustic shelf.
  2. Complicated, difficult, or puzzling.
    • She gave a knotty explanation that no one could follow.
    • The detective faced a knotty mystery that took weeks to solve.
    • They discussed the knotty problem of climate change.
Antonyms
What does "knotty" mean? | whatsthatwordmean | whatsthatwordmean