IPA: /ˌpɜːrspɪˈkeɪʃəs/
KK: /pɜrˈspɪkəˌkeɪʃəs/
Having a keen ability to notice and understand things quickly and accurately.
Her perspicacious observations helped the team solve the problem efficiently.
Perspicacious is formed from "perspicax" (meaning clear-sighted) and the suffix "-ious" (meaning characterized by). The word describes someone characterized by clear insight or keen perception.
Think of someone who is 'clear-sighted' — 'perspicax' means having clear vision, and '-ious' indicates a quality. This helps you remember that 'perspicacious' refers to someone who has keen insight.