idio: own
syn: together
crat: a mixing(cat&rat)
ic: like 

像一堆自我的混合在一起：特質

鼠貓混合的特質


means unique to an individual. 

Albert Einstein famously had lots of idiosyncratic habits. 

For example, he rarely wore socks, and he talked to his cat.

One thing that Einstein definitely wasn't was an idiot. Yet idiosyncratic and idiot are related. 

Idio is ancient Greek for "one's own." 

A idiosyncratic person is someone 
who does things in his own way.

And the original meaning of idiot was basically "a regular Joe" — an ordinary person who keeps to himself.

Democratic Idiot Synthesis Jan believed that
 
if we took all the world’s idiots and formed a democratic state with them using a forced form of synthesis, they would end up ruling the world; 

Jan tried to convince people everyday that her idiosyncratic view of democratic idiot synthesis really would solve all the world’s problems.