If you accuse someone of spreading disinformation, you are accusing them of spreading false information in order to deceive people.
例句
They spread disinformation in order to discredit politicians...他们散布假消息，企图败坏政治家的名声。The government has been involved in a disinformation campaign, deliberately misleading and harassing its citizens.政府已经卷入了一场造假运动，他们有意误导和扰乱民众生活。
英英词典释义
Noun
1. misinformation that is deliberately disseminated in order to influence or confuse rivals (foreign enemies or business competitors etc.)