Continuous (8)
'continuous' is the definition.
(associated in meaning)
This is all the clue.
(Other definitions for unbroken that I've seen before include "Not surpassed" , "One" , "without interruption" , "Continuous" , "Intact" .)
'continuous' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for constant that I've seen before include "Stable" , "Remaining the same" , "Loyal - firm" , "Continuous" , "Persistent and unchanging" .)
(Other definitions for ongoing that I've seen before include "Continuing to exist or progress" , "Currently happening" , "Current" , "still in operation" , "Actually in progress" .)
(Other definitions for nonstop that I've seen before include "Without halting" , "done without interruption" , "(Of a flight) direct" , "Continuous, without pause" , "Around-the-clock" .)
'continuous' is the definition.
(thesaurus)
This is all the clue.
(Other definitions for endless that I've seen before include "'Eternal, perpetual (7)'" , "With no limit in sight" , "Eternal - unbroken" , "Eternal or interminable" , "permanent" .)