Out of style (5)
![Ross](/clue/static/ross-mug.min.png)
'out of style' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for dated that I've seen before include "Old-fashioned" , "Out of fashion" , "Archaic; took out" , "Pass" , "Met socially by arrangement" .)
(Other definitions for old that I've seen before include "Long in the tooth" , "Former, previous" , "Stale" , "Getting on" , "Senescent" .)