Break peacekeepers' bravery (7)
I believe the answer is:
unnerve
'break' is the definition.
The definition and answer can be both to do with human feelings as well as being verbs in their base form.
Maybe there's an association between them I don't understand?
'peacekeepers' bravery' is the wordplay.
'peacekeepers'' becomes 'un' (United Nations, peacekeeping organisation).
'bravery' becomes 'nerve' (nerve is a kind of bravery).
'un'+'nerve'='UNNERVE'
Can you help me to learn more?
(Other definitions for unnerve that I've seen before include "worry" , "Cause to lose courage - even run away" , "Make to feel uneasy" , "spook" , "Intimidate" .)