Sloth perhaps from Andes, idly meandering (6,3)
I believe the answer is:
deadly sin
'sloth perhaps' is the definition.
(sloth is a kind of deadly sin)
'andes idly meandering' is the wordplay.
'meandering' is an anagram indicator.
'andes'+'idly'='andesidly'
'andesidly' is an anagram of 'DEADLY SIN'.
'from' acts as a link.
(Other definitions for deadly sin that I've seen before include "not good - bad" , "Lethal lapse like pride, gluttony or envy" , "Eg, lust or pride" , "Anger, say" , "greed, or lust" .)