invaluable
invaluable
/ɪnˈvæljuəbl/
extremely useful
invaluable information
invaluable to/for somebody/something The book will be invaluable for students in higher education.
invaluable in something The research should prove invaluable in the study of children's language.
This technology is invaluable for pupils with poor sight.
You will find their help absolutely invaluable.
Your support has been invaluable to us.
Invaluable means ‘very valuable or useful’. The opposite of valuable is valueless or worthless.
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