24 across
Flimsy
undergarment
stylish
for
dummy
(9)
Flimsy undergarment stylish for dummy (9)
hints
0
checks
0
hints
The definition is at the end of the clue.
How the clue works
Here the definition is dummy, as in a fool, so you're after a word for a bit of a dunce. The rest is a straight run of three pieces: LAME for "flimsy", then BRA for "undergarment", then IN for "stylish". Stick them together and you've got your fool.