Which preposition to use with unfavourable

to Occurrences 91%

I will then explain the sources of information which were open to Americans after the war began; and will next describe how this information produced an American opinion unfavourable to Germany, as observed by one who has read widely and watched the trend of his country's thought with keen interest.

for Occurrences 23%

Weather conditions on the Plateau, moreover, were often very unfavourable for flying even in the spring and summer.

in Occurrences 2%

If one man was favourable to their cause in three of the points belonging to it, but was unfavourable in the fourth, he could be put aside and replaced.

as Occurrences 1%

Collapse of the Han dynasty The economic results of the Turkestan trade in this period were not so unfavourable as in the earlier Han period.

Which preposition to use with  unfavourable