Wetland oppresses lazy blonde (6)
I believe the answer is:
flaxen
'blonde' is the definition.
(similar in meaning)
I can't explain the remainder of the clue.
Can you help me to learn more?
(Other definitions for flaxen that I've seen before include "Pale yellow in colour" , "Blonde, reading poetry" , "Pale yellow, as hair may be" , "Of a particular plant fibre" , "Light yellow" .)