Public upset when vase lost (5)
I believe the answer is:
overt
'public' is the definition.
(both can mean well-known or unconcealed)
I can't explain the rest of the clue.
Can you help me to learn more?
(Other definitions for overt that I've seen before include "This is not hard to see" , "Done or shown openly" , "Open and candid" , "Not locked away" , "Open, not secret or hidden" .)