Helpful (4)
'helpful' is the definition.
(associated in meaning)
This is the entire clue.
(Other definitions for useful that I've seen before include "Functional and worthwhile" , "Effective" , "Practical and functional" , "Of practical assistance" , "Of service" .)
'helpful' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for of use that I've seen before include "Helpful" , "Having a function" , "Employable" , "practical" , "Serviceable" .)
'helpful' is the definition.
(thesaurus)
This is all the clue.
(Other definitions for good that I've seen before include "benefit" , "and 22 Down and 14 Across: Christmas carol" , "Worthy" , "Carol character from 1 as of old" , "Obedient" .)
'helpful' is the definition.
(similar in meaning)
This is the entire clue.
(Other definitions for accommodating that I've seen before include "as Mrs Hudson was to Holmes" , "Willing to help" , "Considerate of others" , "Obliging - providing a room" , "Compliant" .)