Conspicuous thumping (8)
I believe the answer is:
striking
This clue might be a double definition.
'conspicuous' is the first definition.
(similar in meaning)
'thumping' is the second definition.
Both the definition and answer are adjectives. Maybe there's a link between them I don't understand?
Can you help me to learn more?
(Other definitions for striking that I've seen before include "Noticeable" , "stopping work" , "Hitting or refusing to work" , "Conspicuous" , "not working" .)