The Answers for Wordscapes Level 20509 from the Calm 15 pack and Master group are: deli, dish, held, hide, idle, isle, lids, lied, lies, shed, shied, shield, side, sled, slid, and slide.
Just a heads-up: the puzzle layout on Master levels is autogenerated, so the grid you see here might look a little different than the one in your game.