Being breezy, Ray stupidly gets out of line (4)
I believe the answer is:
airy
'being breezy' is the definition.
(I've seen this before)
'ray stupidly gets out of line' is the wordplay.
'stupidly' is an anagram indicator (a stupid ordering of the letters).
'gets' means one lot of letters goes inside another (gets can mean captures or absorbs).
'out of line' becomes 'i' (I am not sure about this - if you are sure you should believe this answer much more).
'ray' with letters rearranged gives 'ary'.
'ary' going around 'i' is 'AIRY'.
Can you help me to learn more?
(Other definitions for airy that I've seen before include "Spacious - aerial" , "Spacious; delicate" , "Breezy" , "affecting nonchalance" , "Fanciful" .)