inestimable

Adjective

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.
   • The Voyager spacecraft explored the solar system and continued into the inestimable space beyond.
   • 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.1776, United States Declaration of Independence
2. Venerable, great.
   • 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.1789, The Papers of Thomas Jefferson, Volume 15