Practical German avoids being less organised (8)
I believe the answer is:
sensible
'practical' is the definition.
(I've seen this before)
'german avoids being less organised' is the wordplay.
'german' becomes 'g' (abbreviation).
'avoids' is a deletion indicator.
'organised' indicates an anagram.
'being'+'less'='beingless'
'beingless' with 'g' removed is 'beinless'.
'beinless' anagrammed gives 'SENSIBLE'.
(Other definitions for sensible that I've seen before include "Practical, showing sound thinking" , "Wise, prudent" , "As a matter of fact" , "Level-headed" , "Reasonable, showing sound judgment" .)