Possibly try this dry (7)
I believe the answer is:
thirsty
'dry' is the definition.
(similar in meaning)
'possibly try this' is the wordplay.
'possibly' indicates anagramming the letters.
'try'+'this'='trythis'
'trythis' anagrammed gives 'THIRSTY'.
(Other definitions for thirsty that I've seen before include "Wanting a drink" , "Needing a drink" , "Gasping" , "Needing a tipple" , "Feeling dehydrated" .)