undistinguishable

Từ điển WordNet v3.1 - WordNet Dictionary

adjective

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
• Syn:
indistinguishable
• Ant:
distinguishable (for: indistinguishable)