incisive
adjective /ɪnˈsaɪsɪv/
  /ɪnˈsaɪsɪv/
 (approving)- showing clear thought and good understanding of what is important, and the ability to express this
- incisive comments/criticism/analysis
 - He had a clear, incisive mind.
 
Extra ExamplesTopics Personal qualitiesc2- She is an incisive critic of the current education system.
 - Their comedy is savage and incisive.
 
 - showing somebody’s ability to take decisions and act with force
- an incisive performance
 
 
Word Originlate Middle English (in the sense ‘cutting, penetrating’): from medieval Latin incisivus, from Latin incidere ‘cut into’, from in- ‘into’ + caedere ‘to cut’.