In the parlance of today, thanks for the encouragement (6)
I believe the answer is:
cheers
'the encouragement' is the definition.
(I've seen this before)
I don't understand how the remainder of the clue works.
Can you help me to learn more?
(Other definitions for cheers that I've seen before include "Heartens with hurrahs" , "A colloquial toast - hooray!" , "Shouts of praise" , "Bottoms up; thanks" , "Drinker's toast" .)