Can you help?
10a. Big cat,say, now drowned(9)???N????? - tried anagrams but to no avail
12a. Sapotaceous tree that is depending on slug resistance(9)???L?????
15d. a queen,perhaps,protected by Duchess & coterie(9)???????L?
16d.Obese and long distended eating such spaghetti?(9)???????S?