Similarity of adj undistinguishable

1 sense of undistinguishable

Sense 1
indistinguishable (vs. distinguishable), undistinguishable -- (not capable of being distinguished or differentiated; "the two specimens are actually different from each other but the differences are almost indistinguishable"; "the twins were indistinguishable"; "a colorless person quite indistinguishable from the colorless mass of humanity")