perspicacious

 
Pronunciation: /ˌpəːspɪˈkeɪʃəs/

adjective

  • having a ready insight into and understanding of things: it offers quite a few facts to the perspicacious reporter

Derivatives

perspicaciously

adverb

Origin:

early 17th century: from Latin perspicax, perspicac- 'seeing clearly' + -acious