perspicacity
🇺🇸
/ˌpɜːrspɪˈkæsəti/
🇬🇧
/ˌpɜːspɪˈkæsəti/
The skill of understanding things very quickly and clearly.
Her perspicacity allowed her to solve the puzzle in no time.
她敏锐的洞察力让她很快就解开了这个谜题。