adjective
inestimable
in-ESS-tuh-muh-bul/ɪnˈestɪməbl/
Too great or valuable to be measured.
The grandparent's embrace shows the inestimable value of their bond.

Etymology
The pieces express something that cannot be appraised or calculated. Applied to precious things, this became praise: their value is too great to put a price on.
In context
And above all, that treasure so inestimable in declining years, a true and kind friend to listen to their sorrows, watch over their sickness, and administer comfort
More examples
- Her years of experience are of inestimable value to the team.
- The fire causes inestimable damage to the historic library.
- His steady support is an inestimable gift during a difficult time.
Forms
inestimable
inestimably adverb — To a degree beyond possible measurement.
Similar words
- invaluable
- Emphasizes exceptional usefulness rather than greatness beyond possible measurement.
- priceless
- Emphasizes worth beyond money, often because of personal significance.
- immeasurable
- Emphasizes size or degree beyond measurement, not necessarily value.