Inestimable
Part of speech: adjective
Definition: Not able to be estimated; not able to be calculated, computed or comprehended, as because of great scale, degree or magnitude.
Immeasurable
Part of speech: adjective
Definition: impossible to measurevast
Example sentence: The captaincy of the national side is a distinction which Messi deserves as he has all the qualities a captain requires - a combative character and immeasurable talent.