incisive
/ɪnˈsaɪsɪv/adjective
1- (of a person or mental process) intelligently analytical and clear-thinking（人, 心理过程）敏锐的：
she was an incisive critic.
她是个敏锐的批评家。
1.1
- (of an account) accurate and sharply focused（叙述）尖锐的, 深刻的：
the songs offer incisive pictures of American ways.
这些歌曲深刻地描述了美国人行为方式的种种情景。
1.2
- (of an action) quick and direct（行动）敏捷的：
the most incisive move of a tight match.
一场难分难解的比赛的最敏捷的一步棋。
派生词
incisively
adverbincisiveness
noun词源
late Middle English （in the sense 'cutting， penetrating'）： from medieval Latin incisivus, from Latin incidere 'cut into' （see INCISE）.