Doubt
Definition
(v) : To be unsure or question.
Example
"(n) : They had serious doubts about the truth of his unbelievable story."
"(v) : He doubted his ability to finish the race, but his friends encouraged him to try."
"(v) : He still doubts that this plan will work, because it has too many weak points."
Explanation
Doubt means feeling uncertain or not sure about something. For example, if you are not sure you studied enough, you may doubt your exam results. Doubt can also mean not believing someone fully, like doubting someone’s story that sounds false. As a noun, it refers to the feeling of uncertainty: “She had doubts about moving to another city”. As a verb, it means to question or be unsure: “I doubt she will come on time”. Doubt shows lack of confidence, trust, or certainty in a person, idea, or event.