Which preposition to use with unsuitable

for Occurrences 50%

Have we rejected even good thoughts which were unsuitable for the time of recitation, and above all have we banished idle or indifferent ones?

to Occurrences 38%

"Well," continued the fiend, "I wish he may turn up shortly, for I am half deaf already with the banging and booming of this infernal clapper, which seems to have grown much worse of late; and the blessings and the crossings and the aspersions which I have to go through are most repugnant to my tastes, and unsuitable to my position in society.

in Occurrences 4%

3 Mrs. Potter put away the writing of fiction, as unsuitable in these dark days.

on Occurrences 2%

For the Mordaunt Estate, which is no estate at all and never has been, but an ex-butcher of elegant proclivities named Wagboom, prefers to rent its properties on a basis of prejudice rather than profit, and is quite capable of rejecting an applicant as unsuitable on purely eclectic grounds, such as garlic for breakfast, or a glass eye.

as Occurrences 1%

But, because of its great weight and low free-board, it is unsuitable as a freight carrier and by reason of the limitations of its construction is not of the correct form to successfully run the rapid and bad waters of many of the South American rivers.

Which preposition to use with  unsuitable