incisive

a. 敏锐的, 机敏的, 激烈的, 切入的, 锋利的
【医】 切牙的, 切的

副词:incisively 名词:inci-siveness 

in.ci.sive

adj.（形容词）
Penetrating, clear, and sharp, as in operation or expression:
敏锐的，尖刻的：具穿透力的、清晰的与锋利的，如在操作或表达上：
例句：
an incisive mind; incisive comments.
锐利的头脑；尖锐的评论


【引伸】
inci.sively
adv.（副词）
inci.siveness
n.（名词）
<参考词汇><同义词>incisive,trenchant,biting,cutting,crisp,clear-cutThese adjectives are synonymous when they refer to keenness and forcefulness of thought, expression, or intellect.
这些形容词用以表示思想、表达或才智的尖锐有力时是同义词。
Incisive andtrenchant suggest penetration to the heart of a subject and clear, sharp, and vigorous expression:
Incisive 和trenchant 指揭示问题中心以及清晰、锐利而强有力的表达：
例句：
an incisive and piquant style of writing;
锋利、辛辣的写作风格；

例句：
trenchant wit.
锐利的头脑。

Biting andcutting apply to penetration and discernment that often have a sarcastic or sardonic quality capable of wounding or stinging:
Biting 和cutting 用以指具有嘲讽、挖苦性质，可使人受伤害或刺激的：
例句：
.Biting remarks revealed her attitude of contempt. (D.H. Lawrence).
.讽剌挖苦的话体现了她的轻蔑态度. (D·H·劳伦斯）。

例句：
.He can say the driest, most cutting things in the quietest of tones. (Charlotte Brontô).
.他能以最平静的口吻说出最冰冷、最剌人的话. （夏洛蒂·勃朗特）。

Crisp suggests clarity, conciseness, and briskness:
Crisp 有清晰，简明和爽快的含义：
例句：
a crisp retort;
干脆利落的反击；

例句：
crisp banter.
轻松简短的玩笑。

Clear-cut specifies distinctness and sharpness of definition:
Clear-cut 特指定义的明确清晰：
例句：
The wording of the lease is so clear-cut that no one could possibly misinterpret its meaning.
契约上的措辞如此清楚明了因而没人可能误解它的意思