The phrase "are ill founded" is correct and usable in written English.
It can be used to describe arguments, claims, or beliefs that lack a solid basis or justification.
Example: "The accusations against the company are ill founded and lack any substantial evidence."
Alternatives: "are unfounded" or "are baseless".
Carlyn Meyer Chicago, Feb. 3, 2011 To the Editor: Re "Israel, Alone Again?," by Yossi Klein Halevi (Op-Ed, Feb. 2): Fears of a Muslim Brotherhood takeover of Egypt are ill founded.
Those challenging the law have an uphill path as judges often defer to legislative findings of fact even when they are ill founded, and the Supreme Court has generally failed to intervene on the dubious assumption that these types of laws do not constitute "punishment".
"I think all the claims were ill founded," Mrs. Pollack said.
He reminded us that the great white's reputation as a maneater is ill founded.
We can see, for example, that the show's reputation as improvisatory and chaotic is ill founded.
Owers said fears armed officers would be treated as suspects if they opened fire were ill founded.
Roland Schiff, president of the Tribunal de Commerce de Paris, said the claim was "ill founded" and threw out the case.
On the day the report was published, Better Capital said the accusations it had deliberately avoided telling employees about the company's problems were ill founded.
But as the current historical context shows, the belief that the president of the United States is somehow more responsible than the North Korean dictator is ill founded.
And despite early predictions that there were so few films featuring women in starring roles this year that the awards committees would struggle to find enough nominees, these fears were ill founded.
"The Illitches have been in this city for a long time and have a very long track record of doing what they say and creating jobs in the city," he said, adding that economic studies had shown the benefits of the project and criticisms were "ill founded and not based on facts".
