undistinguishable
- a not capable of being distinguished or differentiated
- Agent Smith and his cohorts wear dark suits and ties: they're very neat, one undistinguishable from another.
- After he loafs around home for a while, spending his time with a group of undistinguishable cronies who drink a greal deal and generally do not amount to much.
- But the book is torpid, the music is undistinguished and the words are undistinguishable, thanks to a faulty sound system and a resolutely amateurish cast.