I like this old tongue, but it's next to impossible to think coherently in it.

I need a few hours' sleep before attempting to think coherently.

Tannis was the only one who seemed to be able to think coherently.

His mind was tired, and he talked or thought coherently no longer.

But there was no time to get organized, to take stock, to think coherently.

She couldn't think coherently, only hang on to the phone, desperate for someone to talk to.

I'll take it, she thought, just before her ability to think coherently ceased.

Maybe June could have understood the words, but right now she couldn't seem to think coherently.

But before she could think coherently enough to worry about what might be happening to her son, the phone rang again.

I had no trouble making decisions, reasoning or thinking coherently.