Pointless (6)
'pointless' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for futile that I've seen before include "Useless, producing no results" , "Useless or vain" , "Ineffective" , "Useless, pointless" , "Useless, a waste of effort" .)
'pointless' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for inane that I've seen before include "Empty-headed" , "unimaginitive" , "Delirious" , "Idiotic" , "Frivolous" .)