Unnecessary (6)
'unnecessary' is the definition.
(similar in meaning)
This is the entire clue.
(Other definitions for superfluous that I've seen before include "Redundant, unnecessary" , "left over?" , "Not needed" , "Extra to requirements" .)
'unnecessary' is the definition.
(associated in meaning)
This is the entire clue.
(Other definitions for inessential that I've seen before include "Not absolutely necessary" , "Something that's only nice to have" , "dispensable" , "Unnecessary" , "Not totally necessary" .)
(Other definitions for avoidable that I've seen before include "Not necessary" , "Such a mistake, say, should not have happened" .)
'unnecessary' is the definition.
(similar in meaning)
This is all the clue.
(Other definitions for needless that I've seen before include "without provocation?" , "Without reason" , "Unneccessary and unwarranted" , "Gratuitous" , "Surplus to requirements" .)
(Other definitions for wasted that I've seen before include "Squandered or weakened" , "Squandered, dissipated" , "Used to no purpose" , "Misspent" , "Not used to good advantage" .)