This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

• Lexulous
• Wordscraper
• Wordosaur

adj. Impossible to estimate or compute: inestimable damage. See Synonyms at incalculable.

adj. Of immeasurable value or worth; invaluable: "shared all the inestimable advantages of being wealthy, good-looking, confident and intelligent” ( Doris Kearns Goodwin).

adj. Not able to be estimated; not able to be calculated, computed or comprehended, as because of great scale, degree or magnitude.

adj. Incapable of being estimated or computed; especially, too valuable or excellent to be measured or fully appreciated; above all price.

Not to be estimated or com puted; beyond measure.

Of very great value or excellence: as, inestimable blessings.

adj. beyond calculation or measure

"In closing, I'll return to our national creed, what Lincoln called the inestimable jewel of American history, and offer my respect for and urge my fellow Republicans to respect every human being's rights to liberty and the pursuit of happiness as much as they cherish their own."

incalculable   

incalculable    priceless    invaluable   

priceless    incalculable    God-given    pecuniary    irreplaceable