Informal description of a promotional competition? (4-3-4)
I believe the answer is:
free-and-easy
'informal' is the definition.
(thesaurus)
'description of a promotional competition?' is the wordplay.
I cannot quite understand how this works, but
'a' could be 'an' and 'an' is located in the answer.
This explanation may well be incorrect...
Can you help me to learn more?
(Other definitions for free-and-easy that I've seen before include "Relaxed, with few rules" , "Informal, relaxed" , "Cheerfully tolerant" , "Unconstrained" , "Casual" .)