perspicacity
🇺🇸
/ˌpɜːrspɪˈkæsəti/
🇬🇧
/ˌpɜːspɪˈkæsəti/
The skill of understanding things very quickly and clearly.
Her perspicacity allowed her to solve the puzzle in no time.
她敏銳的洞察力讓她很快就解開了這個謎題。