Antonyms of adj undistinguished

1 sense of undistinguished

Sense 1
insignificant, undistinguished -- (not worthy of notice)

INDIRECT (VIA unnoticeable) -> noticeable -- (capable or worthy of being perceived; "noticeable shadows under her eyes"; "noticeable for its vivid historical background"; "a noticeable lack of friendliness")

Similarity of adj undistinguished

1 sense of undistinguished

Sense 1
insignificant, undistinguished -- (not worthy of notice)
       => unnoticeable (vs. noticeable) -- (not noticeable; not drawing attention; "her clothes were simple and unnoticeable"- J.G.Cozzens)