Tolerate one offer there at the end (5)
I believe the answer is:
abide
'tolerate' is the definition.
(synonyms)
'one offer there at the end' is the wordplay.
'one' becomes 'a'.
'offer' becomes 'bid' (bid is a kind of offer).
'at the end' indicates one should take the final letters.
The last letter of 'there' is 'e'.
'a'+'bid'+'e'='ABIDE'
(Other definitions for abide that I've seen before include "Tolerate - dwell" , "Remain - tolerate" , "'. . . . . with me, fast falls the eventide'" , "Last" , "Hack" .)