Crossword Puzzle Soft muddy stuff

Clue: Soft muddy stuff

Muddy stuff (e.g. MIRE with 4 letters)
Stuff with soft material (WAD with 3 letters)
Soft stuff found in this puzzle's four longest Across entries (NERF with 4 letters)
Stuff used to soften baseball mitts (LANOLIN with 7 letters)
Soft stuff (e.g. MUSH with 4 letters)
Soft stuff, at times (SOAP with 4 letters)
Soft stuff for baby (TALC with 4 letters)
Dynamite stuff, briefly (NITRO with 5 letters)
Soft feathers (DOWN with 4 letters)
Software bootlegger (PIRATE with 6 letters)