N-COUNT [usually plural]持怀疑态度的人;(尤指在宗教或政治方面)信仰不坚定的人 If you refer to people as doubters, you mean that they have doubts about something, especially their religious or political system. 持怀疑态度的人;(尤指在宗教或政治方面)信仰不坚定的人
Some doubters fear this news may not be as good as it appears.