Almost got by though outmoded (5)
I believe the answer is:
passe
'outmoded' is the definition.
(I know that outmoded can be written as passe)
'almost got by' is the wordplay.
'almost' means to remove the last letter (most of the word but not all of it).
'got by' becomes 'passed' (I've seen this in another clue).
'passed' with its last letter removed is 'PASSE'.
'though' is the link.
(Other definitions for passe that I've seen before include "Master key - picture mounting" , "Jaded" , "No longer fashionable" , "Old hat" , "Past its prime - in France" .)