undistinguishable

形容词 adj.
/ˌʌndɪˈstɪŋɡwɪʃəb(ə)l/   

英文释义

形容词 adj.
  1. Imperceptible; indistinct.
  2. Indistinguishable.
    — Here I obtained the rare and beautiful swallow-tail butterflies, Papilio aenomaus and P. liris; the males of which are quite unlike each other, and belong in fact to distinct sections of the genus, while the females are so much alike that they are undistinguishable on the wing, and to an uneducated eye equally so in the cabinet.

词形变化

词源

Etymology tree
Proto-Indo-European *né
Proto-Indo-European *n̥-
Proto-Germanic *un-
Proto-West Germanic *un-
Old English un-
Middle English un-
English un-
English distinguishable
English undistinguishable
From un- + distinguishable.
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