Which preposition to use with unfit

for Occurrences 572%

Of that base man he could tell much which would render him unfit for the association of any person living, but he forbears.

to Occurrences 7%

But, unfortunately for us, the Colonel in command reported us sick and unfit to march.

in Occurrences 4%

So that Verse seems not only unfit in the best use of it, but much more in the worst, when "a servant is called," or "a door bid to be shut" in Rhyme [p. 569].

as Occurrences 2%

Or, again, of the East Indian peoples, so unfitted as a rule for making the best of this world, so passive, dreamy, subtle, unpractical, and yet with their marvellous spiritual gift, their intuition (also since the dawn of history) and conviction of another plane of being than that in which we mostly move, and their occasional power of distinctly sensing that plane and acting on its indications.

by Occurrences 2%

Pronounced unfit by the regimental doctor, his name had been placed upon the hospital list.

than Occurrences 1%

But after a month of Queenie, Colin was more nervous and unfit than ever.

Which preposition to use with  unfit