Webster's Revised Unabridged Dictionary · 1913

Inestimable

Inestimable , adjective

[Latin inaestimabilis: compare French inestimable. See In- not, and Estimate.]

Incapable of being estimated or computed; especially, too valuable or excellent to be measured or fully appreciated; above all price; as, inestimable rights or privileges.
But above all, for thine inestimable love. — Bk. of Com. Prayer
Science is too inestimable for expression by a money standard. — Lyon Playfair