undistinguished
adjective /ˌʌndɪˈstɪŋɡwɪʃt/
  /ˌʌndɪˈstɪŋɡwɪʃt/
 - not very interesting, successful or attractive
- an undistinguished career
 
Extra ExamplesTopics Difficulty and failurec2- A few interesting buildings have been replaced by typically undistinguished modern blocks.
 - The king resembled his undistinguished father in appearance.