All 6 Uses of

rational

in

Cujo

Eventually Vic and Roger had worn him down, but not with rational arguments.
*

rational = based on reason

In a world where parents get divorced, where older kids sometimes beat the shit out of you for no rational reason, where the rival Little League team sometimes racks the crap out of your pitching, where the good guys don't always win like they do on TV, where you don't always get invited to the good birthday party, in a world where so much goes wrong, there will always be Twinkles and Cocoa Bears and All-Grain Blend, and they'll always taste good.†

She could hear herself talking to one of Sheriff Bannerman's deputies, quite calmly and rationally, and then putting the phone down.†

She was afraid that if she had told Holly that she had been trying to get Joe's permission to come down here for years, that this trip had only occurred because of brutal generalship on her part, and that even so it had almost come down to Joe's strapping her with his leather belt...she was afraid that if she told Holly those things, her sister's reaction would be horrified anger rather than anything rational and helpful.†

rational = reasonable

Definition:

reasonable

in various senses, including:

"It's not rational to treat 2+2 as 5." -- logical as contrasted to illogical
"I know you're upset, but please think about this in a rational manner." -- based on reason as contrasted to emotion
"When I was 10-years-old, I wasn't very smart, but I was still rational." -- capable of using reason as contrasted to being insane or lacking the ability to reason
"In matters of the heart, I trust my intuition more than my rational analysis." -- based on a logical analysis as contrasted to intuition, instinct, custom, tarot-card reading, or some other system of decision making