Firm at this place not losing heart, sticking together (8)
I believe the answer is:
coherent
'sticking together' is the definition.
(I've seen this before)
'firm at this place not losing heart' is the wordplay.
'firm' becomes 'co' (a firm is a company).
'at this place' becomes 'here' ('here' can be a synonym of 'at this place').
'losing heart' says to hollow out the word (remove centre letters).
'not' with its middle taken out is 'nt'.
'co'+'here'+'nt'='COHERENT'
(Other definitions for coherent that I've seen before include "Sticking together" , "Clear and logical, not confused" , "Intelligible and lucid" , "Orderly, logical, consistent" , "Not rambling in speech or reason" .)