questioning validity without investigating to be sure
Here Doubt is defined as the lack of faith that evidence leads to a certain conclusion. This means that even though evidence supports a particular concept, the character is unwilling to abandon the belief that alternative explanations can be found. Certainly this approach has the advantage of keeping one's mind open. But sometimes a mind can be too open. If a character Doubts too much, he will not accept solid evidence no matter how conclusive. This can prevent the character from ever accepting the obvious truth and continuing to labor under a delusion.
syn. pessimism, uninformed misgivings, uncertainty, trepidation, distrust