I find it inconceivable that someone wouldn't know the meaning of this word, since it's used so often. 

2 hours ago, drpaladin said:

Most things are inconceivable until they happen.

Sadly, this brings me back to an exchange you and I had last Thursday, lest we forget.

Martin Niemöller

First they came ... - Wikipedia

First they came for the Communists
And I did not speak out
Because I was not a Communist

Then they came for the Socialists
And I did not speak out
Because I was not a Socialist

Then they came for the trade unionists
And I did not speak out
Because I was not a trade unionist

Then they came for the Jews
And I did not speak out
Because I was not a Jew

Then they came for me
And there was no one left
To speak out for me