Inestimable
Pronunciation : In*es"ti*ma*ble
Part of Speech : a.
Etymology : [L. inaestimabilis: cf. F. inestimable. See In- not, and Estimate.]
Definition : Defn: 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.
Syn. -- Incalculable; invaluable; priceless.
Source : Webster's Unabridged Dictionary, 1913