in·es·ti·ma·ble
adjective/ɪnˈestɪməbl/
/ɪnˈestɪməbl/
(formal)- too great to calculate
（大得）难以估量的，无法估计的 - The information he provided was of inestimable value.
他提供的信息价值难以估量。
Oxford Collocations DictionaryInestimable is used with these nouns:- value
Word Originlate Middle English: via Old French from Latin inaestimabilis, from in- ‘not’ + aestimabilis (from aestimare ‘to estimate’). - The information he provided was of inestimable value.