The original (and current) meaning of invaluable is "valuable beyond estimation"; the word describes something so precious that one cannot assign a price to it.

an invaluable asset/contribution/resource He has proved to be an invaluable asset to the company. invaluable to/for sb The data will be invaluable to researchers in determining costs.

INVALUABLE definition: beyond calculable or appraisable value; of inestimable worth; priceless. See examples of invaluable used in a sentence.

If you describe something as invaluable, you mean that it is extremely useful. I was able to gain invaluable experience over that year.

He was an invaluable source of information. This experience proved invaluable later on. Invaluable is not the opposite of valuable. If you want to say that an object has no value at all, …

of great worth; priceless: Your assistance was invaluable. in•val•u•a•bly, adv. WordReference Random House Unabridged Dictionary of American English © 2025 in•val•u•a•ble (in val′ yo̅o̅ ə …

Definition of invaluable adjective in Oxford Advanced Learner's Dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more.

The word 'invaluable' originated in the late 16th century from the combination of the prefix 'in-' meaning 'not' and the word 'valuable'. It is used to describe something that is extremely …

Invaluable, on the other hand, means "valuable beyond estimation." Much like priceless, it describes something that is of such a great value that it cannot fairly be quantified:

invaluable (adjective) invaluable /ɪn ˈ væljəbəl/ adjective Britannica Dictionary definition of INVALUABLE [more invaluable; most invaluable] : extremely valuable or useful