certifiable

形容词 certifiable:

1. fit to be certified as insane (and treated accordingly)
   同义词：certified
2. capable of being guaranteed or certified

cer.ti.fi.a.ble

adj.（形容词）
That can be certified:
可证明的：
例句：
a certifiable fact; certifiable data.
可证实的事实；可保证的数据

Fit to be declared insane.
发疯的：可被宣告为精神失常的

【引伸】
cer.tifi.ably
adv.（副词）