Lengthy (4)
'lengthy' is the definition.
(synonyms)
This is all the clue.
(Other definitions for long that I've seen before include "Yearn (for)" , "hunger" , "die" , "Protracted" , "extended period" .)
'lengthy' is the definition.
(similar in meaning)
This is all the clue.
(Other definitions for extended that I've seen before include "Reached out for next deed" , "Widened" , "Lengthy" , "get out" , "Prolonged, lengthened" .)