Be left with yard full of beans (6)
I believe the answer is:
lively
'full of beans' is the definition.
(thesaurus)
'be left with yard' is the wordplay.
'be' becomes 'live' (to be is to live or exist).
'left' becomes 'l' (common abbreviation).
'with' says to put letters next to each other.
'yard' becomes 'y' (abbreviation).
'live'+'l'+'y'='LIVELY'
(Other definitions for lively that I've seen before include "Active" , "Vivacious" , "Animated" , "Full of zest and energy" , "Full of energy and high spirits" .)