Everyone who is normal has a very strong, rational fear and disgust for spiders.

Acrophobia, she reminded herself, was, by definition, not a rational fear.

"A healthy and rational fear, my boy," Breeze said, still sitting inside the carriage.

I just tell them it isn't a rational fear.

"What do they call a rational fear of birds, then?"

Animals can also be desensitized to their rational or irrational fears.

Whether it was due to a rational fear or an irrational phobia, he didn't know.

With that came a rational fear of the drug.

She had enough rational fears to draw from without invoking the shadows.

Still, their fears, rational or not, tend to rule them.