inestimable

Everyday

1. Too great to be measured or counted. tree →
2. (formal) Extremely valuable or important: of inestimable value. tree →

In the lessons

A formal word in speeches and thank-you notes: «your help has been of inestimable value». In history, treasures and inventions may be called of inestimable worth. Phrases: of inestimable value, inestimable importance.

Examples

• The ancient library was of inestimable value. tree →
• Her help has been of inestimable value to our school. tree →
• The invention of printing was of inestimable importance. tree →
• The crown jewels are of inestimable worth. tree →
• The damage from the fire was inestimable. tree →
• Grandma's stories are of inestimable value to our family. tree →
• Wedges of gold, great anchors, heaps of pearl, inestimable stones, unvalued jewels-- all scattered in the bottom of the sea! tree →

Note

Formal. Root: «estimate» = guess the size or value; «inestimable» = too big to estimate. Usually positive (great value).