Abandon husband becoming cold in Bush (5)
I believe the answer is:
scrub
This could be a double definition.
'abandon husband' is the first definition.
'scrub' can be an answer for 'abandon' (scrub can mean to remove or delete). I am not sure about the 'husband' bit.
'cold in bush' is the second definition.
'scrub' can be an answer for 'bush' (synonyms). I am not certain of the 'cold in' bit.
'becoming' is the link.
Can you help me to learn more?
(Other definitions for scrub that I've seen before include "Rub hard - low vegetation" , "Rub hard with a brush" , "Scour; brushwood" , "Wash with a brush" , "insignificant type" .)