To misgovern is to govern, or manage, badly. An example sentence would be: Everyone knew he would misgovern the trip.

an experienced leader

A possible prefix for "govern" is "mis-" (misgovern) and a possible suffix is "-ment" (government).

According to SOWPODS (the combination of Scrabble dictionaries used around the world) there are 1 words with the pattern --S-OV--N. That is, nine letter words with 3rd letter S and 5th letter O and 6th letter V and 9th letter N. In alphabetical order, they are:

misgovern

According to SOWPODS (the combination of Scrabble dictionaries used around the world) there are 3 words with the pattern -----VE-N. That is, nine letter words with 6th letter V and 7th letter E and 9th letter N. In alphabetical order, they are:

intervein

misgovern

subnivean