### Clue: Blimey, that's not right!' after drain almost gives way (8)
### Answer: SUCCUMBS 
 ### Explanation: Definition: gives way
 "crumbs!"(like "blimey!", an expression of dismay or surprise) **minus**(that's not) "r"(abbrev. for "right") **placed after**(after) "suck"(to drain/to withdraw fluid by suction) **minus its last letter**(almost).