Get habituated to bad ruin with ultimate rake (5)
I believe the answer is:
inure
'get habituated' is the definition.
I can't tell whether this defines the answer.
'bad ruin with ultimate rake' is the wordplay.
'bad' is an anagram indicator.
'with' says to put letters next to each other.
'ultimate' suggests the final letters.
The final letter of 'rake' is 'e'.
'ruin' with letters rearranged gives 'inur'.
'inur'+'e'='INURE'
'to' acts as a link.
Can you help me to learn more?
(Other definitions for inure that I've seen before include "Harden, make accustomed to" , "Accustom (someone) to something unpleasant" , "Get used to conditions" , "To give experience" , "harden attitude" .)