unbeaten

1. not comparablenot having been thrashed or beaten
2. not comparablenot defeated

   Arsenal went 25 games unbeaten.

   1 more example

   That startling admission capped a miserable night for City as they arrived in Germany following an unbeaten start to the season.

   2011 September 27, Alistair Magowan, “Bayern Munich 2 - 0 Man City”, in BBC Sport

3. not comparableuntrodden

   We walked across unbeaten grassland.

4. not comparableNot beaten or whisked

   Fold in the unbeaten eggs.

5. not comparableball gamesnot out

   He scored an unbeaten century.

plural unbeatens

1. A team or competitor that has not been defeated.

   We had done the impossible. We had beaten the unbeatens.

   2008, Nick Catalano, New York Nights: Writing, Producing and Performing in Gotham, page 271

   1 more example

   This left the Buckeyes and the defending national champion Miami Hurricanes as the nation's only unbeatens.

   2003, Paul Keels, Paul Keels' Tales from the Buckeyes Championship Season, page 66