invaluable
Invaluable (adj) means So valuable that its worth can't be measured; extremely useful or precious. Example: “Her advice was invaluable during the negotiations.”
How to use invaluable
Learner’s notesIn plain EnglishExtremely useful or valuable — despite the "in-" prefix, it means the opposite of worthless.
Don't confuse with "worthless" — invaluable means the opposite: too valuable to put a price on.
Word forms
- Comparative
- more invaluable
- Superlative
- most invaluable
Fill the gap
Can you complete this real example?
Her advice was _____ during the negotiations.
Etymology
From in- + valuable, on the pattern of "priceless" — literally meaning too valuable to price, not "lacking value."