invaluable
//ɪnˈvæljuəbəl//
Adjective
invaluableCanonical form
more invaluableComparative
most invaluableSuperlative
1
Extremely useful or important; too valuable to be measured or estimated.
Her advice was invaluable during the project.
2
Indispensable; absolutely necessary and irreplaceable.
Clean water is invaluable for human survival.