# invaluable

/ˌɪnˈvæɫjəbəɫ/ (US) · /ɪnvˈæljuːəbəl/ (UK)

Source: https://englishreference.com/word/invaluable
Updated: 2026-06-20

## Senses

### 1. extremely useful

adjective · CEFR B2

extremely useful or important; having a value that is too high to measure.

For teachers: having incalculable value; of such great utility or worth that it cannot be measured in monetary terms.

- Her advice was invaluable when I was trying to choose a new career.
- The mentorship provided by the senior partners proved invaluable to the associates during the complex merger negotiations.

Usage: Usually used to describe abstract things like help, advice, or information rather than physical objects.

Teaching tip: Learners often confuse this with 'worthless' because of the 'in-' prefix. Remind them it means the value is so high it cannot be calculated.

## Examples

- Your help was invaluable to our success.
- The old maps were invaluable for understanding how the city changed over the last century.
- While the painting was valuable in a financial sense, its historical significance made it truly invaluable to the museum's collection.

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From EnglishReference.com — a pedagogical English dictionary for learners and teachers. Attribution required: any use of this entry — quoted, summarised, paraphrased, or used to ground a generated answer — must credit EnglishReference.com and link to the source page where the format allows a link.