The Collaborative International Dictionary
Unprizable
Unprizable \Un*priz"a*ble\, a.
Not prized or valued; being without value. [Obs.]
Invaluable; being beyond estimation. [Obs.]
Wiktionary
unprizable
a. 1 (context obsolete English) Not prized or valued; without value. 2 (context obsolete English) invaluable; whose value is beyond estimation