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immutable

adjective/ɪˈmjuːtəbl/

not subject to change or variation

The laws of physics are considered immutable, governing the universe with unwavering consistency.

unchangeablefixedpermanent
word origin — from Latin 'immutabilis', from 'in-' meaning 'not' + 'mutabilis' meaning 'changeable'

GRE Vocabulary — Set 34

Set 34 of GRE Vocabulary covers 5 words: immutable, incipient, fecund, diaphanous, decorous. Each entry below includes its definition, an example sentence, and synonyms — practice them with the interactive cards above.

  1. immutable · adjective/ɪˈmjuːtəbl/

    not subject to change or variation

    The laws of physics are considered immutable, governing the universe with unwavering consistency.

    Synonyms: unchangeable, fixed, permanent

    Origin: from Latin 'immutabilis', from 'in-' meaning 'not' + 'mutabilis' meaning 'changeable'

  2. incipient · adjective/ɪnˈsɪpiənt/

    in an initial stage; beginning to happen or develop

    The researchers observed incipient signs of the disease in the patient, indicating that it was still in its early stages.

    Synonyms: initial, emerging, nascent

    Origin: from Latin 'incipientem' (present participle of 'incipere' meaning 'to begin')

  3. fecund · adjective/ˈfiːkənd/

    capable of producing many offspring, seeds, or new growth

    The fecund soil in the valley allowed a wide variety of plants to thrive and produce abundant fruits each season.

    Synonyms: fertile, fruitful, prolific

    Origin: The word 'fecund' originates from the Latin 'fecundus,' which means 'fruitful' or 'prolific.'

  4. diaphanous · adjective/daɪˈæfənəs/

    light, delicate, and translucent

    She wore a diaphanous gown that fluttered gently in the breeze, revealing her silhouette beneath the light fabric.

    Synonyms: sheer, gauzy, translucent

    Origin: from Greek 'diaphanēs' meaning 'transparent' or 'clear', composed of 'dia-' (through) and 'phanēs' (showing)

  5. decorous · adjective/ˈdɛk.ɚ.əs/

    marked by propriety and good taste in behavior manners or appearance

    The decorous behavior of the guests at the formal dinner impressed everyone in attendance.

    Synonyms: proper, seemly, respectable

    Origin: from Latin 'decorus' meaning 'becoming, seemly' and related to 'decorare' meaning 'to adorn'