(主张、指控、恐惧等)无根据的;没有事实依据的。
/ˈɡraʊndləs/
His accusation was groundless.
他的指控毫无根据。
The report concluded that the rumors were groundless and had spread through social media without evidence.
报告得出结论,这些谣言毫无根据,并在缺乏证据的情况下通过社交媒体传播开来。
由 ground(“基础、根据”)+ 后缀 -less(“没有……”)构成,字面意思是“没有基础的”,引申为“缺乏事实或理由支撑的”。