Been changed with water, heat? Becoming this maybe (7-6)
I believe the answer is:
weather-beaten
'this maybe' is the definition.
The definition suggests a singular noun but the answer is not.
'been changed with water heat?' is the wordplay.
'changed with' is an anagram indicator.
'water'+'heat'='waterheat'
'been' mixed up with 'waterheat' gives 'WEATHER-BEATEN'.
'becoming' is the link.
Can you help me to learn more?
(Other definitions for weather-beaten that I've seen before include "Rugged" , "Damaged by storms, etc" , "Well-seasoned" , "Showing signs of exposure to the elements" , "Worn by the elements" .)