ill-founded

[ il-foun-did ]

adjective

1. based on weak evidence, illogical reasoning, or the like:

   an ill-founded theory.

ill-founded

adjective

1. not founded on true or reliable premises; unsubstantiated

   an ill-founded rumour

Word History and Origins

Origin of ill-founded¹

First recorded in 1665–75

Example Sentences

Mr Swann told the UK Covid-19 Inquiry, it was "ill-founded" to suggest there was a "blanket response" as a policy in Northern Ireland.

From BBC

She did not make any of these dangerous and ill-founded accusations in her relatively short speech Monday night.

From Los Angeles Times

In fact, top authorities barraging lawmakers and the public with a panicky, ill-founded crusade are distorting vital information and ignoring the real issues underlying teens’ mental health and how they use social media.

From Salon

The boycott was also described as "disheartening and ill-founded" by the firm, which relies on thousands of independent businesses to own and operate most of its more than 40,000 stores around the world.

From BBC

The boycott was described as "disheartening and ill-founded" by McDonald's.

From BBC

Related Words

• baseless
• false
• inoperative
• irrational
• null
• unfounded
• unreasonable
• unscientific
• unsound
• untrue