jump to conclusions
草率地下结论，没有根据地做出判断
口语·劝人避免武断
英文释义
to form an opinion or make a judgment without having all the facts or information
例句
Don't jump to conclusions; let's hear the full story first.
典故来源
直接比喻思维跳跃，未掌握全部事实就下结论，源于日常推理。