Pleasant tumble in gale (6)
I believe the answer is:
genial
'pleasant' is the definition.
(I know that pleasant can be written as genial)
'tumble in gale' is the wordplay.
'tumble' indicates an anagram.
'in'+'gale'='ingale'
'ingale' anagrammed gives 'GENIAL'.
(Other definitions for genial that I've seen before include "Pleasant and cheerful like good host" , "Mild and pleasant" , "Cheerfully extrovert" , "relating to the chin" , "Cheerful, affable" .)