unmarked

adjective

1. 1

   Not bearing identification.

   “an unmarked highway patrol vehicle”

2. 2

   Free from blemishes.

3. 3

   Not noticed.

4. 4

   Not marked, not closely followed by a defensive player.

5. 5

   Not having been marked, or assigned a score.

   “The teacher sat down to a pile of unmarked work.”

6. 6

   Not marked; not standing out as unusual.

   “The use of that word in that context was unmarked.”