Doubt characterises a status in which the mind remains suspended between two contradictory propositions and unable to assent to either of them Doubt on an emotional level is indecision between belief and . Doubt involves uncertainty, distrust or lack of sureness of an alleged fact, an action, a motive, or a decision. Doubt questions a notion of a perceived "reality", and may involve delaying or rejecting relevant action out of concerns for mistakes or faults or appropriateness. (compare paradox).

is a shojo manga series by Kaneyoshi Izumi. Doubt!! is published in Japan by Shogakukan, in North America in English by VIZ Media and in French by Kaze Manga. It follows Ai Maekawa, a teenager who gives herself a total makeover in the break between middle school and high school in a bid to reinvent her image and become popular.