Well-organised (9)
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'well-organised' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for efficient that I've seen before include "Functioning effectively" , "working economically at speed" , "Working in a well-organised and competent way" , "Producing results with little waste of effort" , "Performing with little wastage" .)
'well-organised' is the definition.
(together can mean organised and collected)
This is all the clue.
(Other definitions for together that I've seen before include "as a group" , "Level-headed" , "Jointly" , "Appearing as a couple" , "In each other's company" .)