a.

1. 神志正常的，頭腦清楚的
   No sane man would go swimming in this nasty weather.

   神志正常的人誰也不會冒著如此惡劣的天氣去游泳。

2. 健全的，無疾病的
   He has a diseased body but a sane mind.

   他身體有病但頭腦健全。

3. 合乎情理的，明智的；穩健的
   She has a sane attitude towards diving and never goes too fast.

   她對於跳水的態度很明智，從不操之過急。

adj.

1. of sound mind; not mad.
2. reasonable; sensible.