Admire a carer, endlessly out to bring friendship (11)
I believe the answer is:
camaraderie
'friendship' is the definition.
(camaraderie is friendship or companionship)
'admire a carer endlessly out' is the wordplay.
'endlessly' means to remove the last letter.
'out' indicates an anagram (out can mean wrong or inaccurate).
'admire'+'a'+'carer'='admireacarer'
'admireacarer' with its final letter taken off is 'admireacare'.
'admireacare' is an anagram of 'CAMARADERIE'.
'to bring' is the link.
(Other definitions for camaraderie that I've seen before include "all that backslapping?" , "Comradeship" , "Mutual trust and friendship" , "Esprit de corps" , "Friendly feeling" .)