Laze about with fervour? (4)
I believe the answer is:
zeal
'fervour?' is the definition.
(I know that zeal is a type of ardor)
'laze about' is the wordplay.
'about' indicates an anagram.
'laze' anagrammed gives 'ZEAL'.
'with' acts as a link.
(Other definitions for zeal that I've seen before include "Passion" , "Zest, ardour" , "Zing" , "Dedicated enthusiasm" , "Eager (if not fanatical) enthusiasm" .)