1) Abused partner 2) Accustomed 3) Adhibited 4) Already broken in 5) Auto designation 6) Available on Craigslist 7) Bought at a garage sale 8) Bought before 9) Broken in 10) Brought into play 11) Brought to bear 12) Car category 13) Car dealership category 14) Car lot designation 15) Cheaper, usually 1) Ate 2) Brought into play 3) Inured 4) Made the most of 5) Misused 6) Not new 7) Old 8) Preowned 9) Previouslyowned 10) Secondhand 11) Utilised 12) Utilized 13) Victimised 14) Victimized 15) Worn 
• (imp. & p. p.) of Use
[adj] - employed in accomplishing something
adjective employed in accomplishing something; `the principle of surprise is the most used and misused of all the principles of war`- H.H.Arnold & I.C.Eaker
previously used or owned; secondhand: a used car. · showing wear or being worn out. · employed for a purpose; utilized. · accustomed or habituated to: I'm not used to cold weather. They weren't used to getting up so early.