Set 51 · Study 1 / 5

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inscrutable

adjective/ɪnˈskruːtəbl/

impossible to understand or interpret

Her smile was inscrutable, leaving everyone wondering what she was truly thinking.

enigmaticmyseriousimpenetrable
word origin — Late Middle English, from Latin 'inscrutabilis', meaning 'not to be scrutinized', from 'in-' (not) + 'scrutare' (to examine or search).

GRE Vocabulary — Set 51

Set 51 of GRE Vocabulary covers 5 words: inscrutable, ineffable, interminable, intrepid, invidious. Each entry below includes its definition, an example sentence, and synonyms — practice them with the interactive cards above.

  1. inscrutable · adjective/ɪnˈskruːtəbl/

    impossible to understand or interpret

    Her smile was inscrutable, leaving everyone wondering what she was truly thinking.

    Synonyms: enigmatic, myserious, impenetrable

    Origin: Late Middle English, from Latin 'inscrutabilis', meaning 'not to be scrutinized', from 'in-' (not) + 'scrutare' (to examine or search).

  2. ineffable · adjective/ɪˈnɛfəbəl/

    too great or extreme to be expressed in words

    The beauty of the sunset was ineffable, leaving everyone speechless as the sky turned vibrant shades of orange and purple.

    Synonyms: unspeakable, indescribable, inexpressible

    Origin: From Middle English 'ineffable', from Latin 'ineffabilis', from 'in-' (not) + 'effabilis' (able to be expressed), from 'effari' (to speak out).

  3. interminable · adjective/ɪnˈtɜrmɪnəbl/

    endless or seemingly endless

    The meeting felt like an interminable series of debates that never seemed to reach a conclusion.

    Synonyms: endless, perpetual, eternal

    Origin: from Latin 'interminabilis', meaning 'unending', from 'in-' (not) and 'terminabilis' (able to be terminated)

  4. intrepid · adjective/ɪnˈtrɛpɪd/

    fearless and adventurous

    The intrepid explorer ventured into the uncharted wilderness, ready to face any challenges that lay ahead.

    Synonyms: fearless, unflinching, adventurous

    Origin: from Latin 'intrepidus', meaning 'unshaken, fearless'; 'in-' meaning 'not' + 'trepidus' meaning 'alarmed, afraid'

  5. invidious · adjective/ɪnˈvɪd.i.əs/

    likely to arouse resentment or anger in others

    The manager's invidious decision to promote one employee over others caused a lot of discontent in the team.

    Synonyms: envy-inducing, resentful, spiteful

    Origin: From Latin 'invidiosus', from 'invidia' meaning 'envy'.