Which preposition to use with bugbears

of Occurrences 31%

He spoke concerning malformation and functional weaknesses and, although obscurely because of the bugbear of professional courtesy, voiced his opinion that Patricia had not received the most adroit medical treatment at the time of little Roger's birth.

to Occurrences 9%

British cruisers were a greater bugbear to American vessels than pirates, and Captain Parson kept a constant lookout for them.

for Occurrences 2%

Mere bugbears for the childish mind; Pure panic terrors of the blind.

in Occurrences 2%

We live rapidly in this age, when nations are breaking up all around us, when unions are dissolving, when dynasties disappear before the light like ghosts at cock-crowing, and when emperors and kings rely upon universal suffrage, once so terrible a bugbear in their eyes, for the titles to their crowns.

from Occurrences 1%

But observe, if we lay down the rule that we will scrupulously respect the right of the chiefs to do wrong, and resolutely suppress all attempts of their subjects to redress their wrongs by violence, which, in the absence of help from us, is the only redress open to them, we may find perhaps that it may carry us somewhat farpossibly to annexationthe very bugbear from which we are seeking to escape.

Which preposition to use with  bugbears