Waits to air rest out (7)
I believe the answer is:
tarries
'waits' is the definition.
'air rest out' is the wordplay.
'out' indicates anagramming the letters (out can mean wrong or inaccurate).
'air'+'rest'='airrest'
'airrest' with letters rearranged gives 'TARRIES'.
'to' acts as a link.
(Other definitions for tarries that I've seen before include "Leaves slowly and hesitantly" , "delays" , "Sire rat (anag.)" .)