caution没有反义词
caution
n.谨慎小心慎重告诫
v.警告提醒告诫
复数：cautions
现在分词：cautioning
过去式：cautioned
同义词
n.
carefulness，thoughtfulness，attentiveness，attention，risk avoidance
v.
warn，notify，signal，give notice，advise
例句
Throwing caution to the wind， he decided to ride his motorcycle without a helmet.
他决定豁出去了，不带安全帽就骑摩托。
The overriding message was one of caution: the global economy is over the worst， but fragilities remain.
最重要的信息是谨慎的：全球经济最糟糕的时期已经过去，但仍然脆弱。
