Erstwhile (3-4)
'erstwhile' is the definition.
(similar in meaning)
This is the entire clue.
(Other definitions for past that I've seen before include "over and done with" , "Second visitor in 5 [A CHRISTMAS CAROL]" , "A person's earlier life history" , "Finished, gone" , "Beyond" .)
'erstwhile' is the definition.
(I know that erstwhile can be written as former)
This is all the clue.
(Other definitions for former that I've seen before include "Erstwhile" , "long ago" , "First-mentioned" , "The first of two mentioned" , "One shaping" .)
'erstwhile' is the definition.
(I know that erstwhile can be written as sometime)
This is all the clue.
(Other definitions for sometime that I've seen before include "Former; occasional (US)" , "On an undetermined date in the future" , "An indeterminate date in the future" , "ex?" , "One day" .)
'erstwhile' is the definition.
(I know that erstwhile can be written as one-time)
This is the entire clue.
(Other definitions for one-time that I've seen before include "Relating to a single occasion" , "Former" .)
'erstwhile' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for old that I've seen before include "At an early stage - at a late stage" , "Long-established" , "Stale" , "Getting on" , "Long in the tooth" .)