1. 形容詞
   無根據的, 無基礎的
   無理由的
   

   同義字詞
   baseless,foundationless,invalid,nonvalid,unfounded,unreasonable,unsubstantiated,unsupported,unwarranted
   

例句

1. WSJ's report is not groundless at all.
2. These fears are not always groundless .
3. For this, as was said, is a groundless error.
4. We have shown that these charges are groundless .
5. Thus, the response was considered to be groundless .
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