insuperable

From Latin insuperabilis.

• (US) IPA^(key): /ɪnˈsup(ə)ɹəb(ə)l/

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insuperable (comparative more insuperable, superlative most insuperable)

1. Impossible to achieve or overcome or be negotiated.
   • 2012, James Lambert, “Beyond Hobson-Jobson: A new lexicography for Indian English”, in World Englishes‎, page 308:

     While Indian English may not have a uniform standard form throughout the country, this in itself is not an insuperable obstacle for lexicography.

2. Overwhelming or insurmountable.
   • 1834, L[etitia] E[lizabeth] L[andon], Francesca Carrara. […], volume II, London: Richard Bentley, […], (successor to Henry Colburn), →OCLC, pages 4–5:

     For the first time I steadily reviewed the obstacles—and to consider them was at once to see they were insuperable.

• unsuperable

• superable

• insuperableness

• insuperability

• impassable
• unconquerable

• insuperable in Webster’s Revised Unabridged Dictionary, G. & C. Merriam, 1913
• “insuperable”, in The Century Dictionary […], New York, N.Y.: The Century Co., 1911, →OCLC.
• insuperable at OneLook Dictionary Search

insuperable (plural insuperables)

1. insuperable

• “insuperable”, in Diccionario de la lengua española, Vigésima tercera edición, Real Academia Española, 2014