1. to a degree that cannot be calculated or measured; immeasurably

Examples

• Her contributions to the research project were inestimably valuable.
• The ancient artifacts are inestimably precious to historians.
• His experience has helped the team inestimably.
• The damage to the ecosystem was inestimably severe.
• She has grown inestimably wiser over the years.
• The mentor’s guidance proved inestimably important to his career.