Used folder uniquely when mounting demos (6)
I believe the answer is:
inured
'used' is the definition.
Both the answer and definition are adjectives. Maybe there's a link between them I don't understand?
'folder uniquely when mounting demos' is the wordplay.
'INURED' is hidden back-to-front within the letters.
However, I am unsure how this is indicated.
Can you help me to learn more?
(Other definitions for inured that I've seen before include "Hardened, accustomed" , "Hardened as by experience" , "Habituated or hardened" , "Accustomed to something unpleasant" , "Hardened, maybe ruined" .)