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obscure

adj. · v.
US //əbˈskjʊɹ// UK //ɒbskjˈɔː// ob·scure
  1. 1 not well-known (adj.)
    B2 Upper Intermediate

    not known by many people.

    lacking fame or prominence; not widely known or celebrated.

    Example

    The library has a large collection of books by obscure poets from the 1800s.

    Example

    The researcher spent years tracking down an obscure legal document that had been misfiled in the local archives since the late nineteenth century.

  2. 2 difficult to understand (adj.)
    B2 Upper Intermediate

    difficult to understand because the meaning is not clear.

    difficult to comprehend or interpret; lacking clarity in expression or meaning.

    Example

    The instructions were so obscure that I had to ask for help.

    Example

    The philosopher's later works are notoriously obscure, requiring extensive commentary for even advanced students to grasp the core arguments.

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  1. 3 hard to see (adj.)
    C1 Advanced Literary

    difficult to see clearly because it is dark or hidden.

    indistinct or faint to the sight; lacking sufficient light or sharpness to be clearly perceived.

    Example

    We could just see the obscure shape of a boat through the thick fog.

    Example

    The obscure outlines of the mountains were barely visible against the moonless sky, creating a sense of isolation for the travellers.

  2. 4 to hide or cover (v.)
    B2 Upper Intermediate

    to cover something so that it is difficult to see or understand.

    to conceal or hide by covering; to make something less visible or intelligible.

    Example

    The clouds moved across the sky and started to obscure the moon.

    Example

    The tall new office building will unfortunately obscure the historic cathedral's facade from this side of the river.

    Usage

    This is a transitive verb that always takes a direct object.

Origin

From Middle English obscure, from Old French obscur, from Latin obscūrus (“dark, dusky, indistinct”), from ob- + scūrus, from Proto-Italic skoiros, from Proto-Indo-European *(s)ḱeh₃-. Doublet of oscuro.

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