Think l have done this one but can't pare three of them:
10a) As in scare, distressed (7)
Think this is ARSENIC but no idea why.
24a) Mulch possibly decayed in hours (7)
Think this is NOURISH but again don't know why.
26a) New style recalled something dull (4).
I have YAWN for this. But surely something dull makes you yawn, it isn't "a" yawn in this sense.
Many thanks in advance.