Paddled pathetically, disheartened and wet (6)
I believe the answer is:
swampy
'wet' is the definition.
('swampy' can be similar in meaning to 'wet')
'paddled pathetically disheartened' is the wordplay.
'paddled' becomes 'swam' (I can't explain this - if you can you should believe this answer much more).
'disheartened' means to remove the middle letters.
'pathetically' with its middle taken out is 'py'.
'swam'+'py'='SWAMPY'
'and' acts as a link.
Can you help me to learn more?
(Other definitions for swampy that I've seen before include "Boggy -waterlogged" , "Marshlike" , "gets bogged down?" , "uncultivated and wet" , "Bog-like" .)