unfathomable
🇺🇸
/ʌnˈfæðəməbl/
🇬🇧
/ʌnˈfæðəməbl/
adjective
R
impossible to understand or measure
The mysteries of the universe are unfathomable to the human mind.
R
impossible to understand someone's thoughts or feelings
His unfathomable expression made it impossible to tell if he was happy or upset.
translation
impossible to understand or measure; impossible to understand someone's thoughts or feelings