Down-to-earth (8)
I believe the answer is:
sensible
'down-to-earth' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for sensible that I've seen before include "As a matter of fact" , "Judicious line, Bess" , "Level-headed" , "'Reasonable, judicious (8)'" , "Showing good judgement" .)