Ahead of time (5)
'ahead of time' is the definition.
(synonyms)
This is the entire clue.
(Other definitions for early that I've seen before include "at start of day" , "sooner than expected" , "near beginning" , "Post this for Christmas?" , "Before the expected time" .)
'ahead of time' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for in advance that I've seen before include "Ahead in place or time" , "Before the event" , "early" , "Beforehand - can invade accordingly (2.7)" .)
'ahead of time' is the definition.
(thesaurus)
This is all the clue.
(Other definitions for beforehand that I've seen before include "Earlier" , "In advance" , "Previously" .)