Stucco oddly breaks into pieces right away and gives under pressure (8)
I believe the answer is:
succumbs
'gives under pressure' is the definition.
'stucco oddly breaks into pieces right away' is the wordplay.
'stucco oddly' becomes 'suc' (I can't justify this - if you can you should believe this answer much more).
'breaks into pieces' becomes 'crumbs'.
'right' becomes 'r' (common abbreviation).
'away' suggests deleting specific letters.
'crumbs' with 'r' removed is 'cumbs'.
'suc'+'cumbs'='SUCCUMBS'
'and' acts as a link.
(Other definitions for succumbs that I've seen before include "Gives in (to temptation)" , "Gives way to something overpowering" , "Yields to pressure, capitulates" , "Gives in, to pressure say" , "Gives in, yields to" .)