Does it make clothes hard to wear? (6)
I believe the answer is:
starch
'wear?' is the definition.
The answer and definition can be both related to change as well as being verbs in their base form.
Perhaps there's a link between them I don't understand?
I don't understand how the remainder of the clue works.
Can you help me to learn more?
(Other definitions for starch that I've seen before include "Fabric stiffener" , "rigid" , "Stiffener in the laundry" , "Reserve" , "Stuff that stiffens, say collars" .)