I am a word of four letters often used in prayer.

Transposed, I become what every one professes.

Transposed again, I become an adjective, the qualities of which every one despises.

Transposed again, I am part of a horse.

201.

My first is poison, slow yet sure,

That preys on many frames;

Compounded oft of things impure,

And called by many names.

My first and second form my whole,