inestimable

• inæstimable (archaic)

From Middle French inestimable, from Latin inaestimābilis, from in (“un-”, “not”) + aestimābilis (“estimable”). Equivalent to in- +‎ estimable.

• IPA^(key): /ɪˈnɛːs.tɪ.mə.bəl/
• (Received Pronunciation) enPR: ĭnĕsʹtĭməbl, IPA^(key): /ɪnˈɛstɪməbl/

inestimable (not comparable)

1. Not able to be estimated; not able to be calculated, computed or comprehended, as because of great scale, degree or magnitude.
   • 1776, United States Declaration of Independence:

     He has refused to pass other Laws for the accommodation of large districts of people, unless those people would relinquish the right of Representation in the Legislature, a right inestimable to them and formidable to tyrants only.

   The Voyager spacecraft explored the solar system and continued into the inestimable space beyond.

2. Venerable, great.
   • 1789, The Papers of Thomas Jefferson, Volume 15:

     On my arrival hither I found a letter from the inestimable Mr. Wythe, by which he informs me that in consequence of a late act of our general assembly he remains the sole judge of the high court of chancery.

• “inestimable, a. (n.)” listed in the Oxford English Dictionary [2^nd Ed.; 1989]

From in- +‎ estimer +‎ -able.

• IPA^(key): /i.nɛs.ti.mabl/

inestimable (plural inestimables)

1. priceless, invaluable; inestimable

• “inestimable”, in Trésor de la langue française informatisé [Digitized Treasury of the French Language], 2012.

• IPA^(key): /inestiˈmable/ [i.nes.t̪iˈma.β̞le]
• Rhymes: -able
• Syllabification: i‧nes‧ti‧ma‧ble

inestimable m or f (masculine and feminine plural inestimables)

1. priceless, invaluable

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