groundless

[ground-lis]

adjective

1. without rational basis.

   groundless fears.

   Synonyms: idle, unjustified, unfounded, baseless

groundless

/ ˈɡraʊndlɪs /

adjective

1. without reason or justification

   his suspicions were groundless

Other Word Forms

• groundlessly adverb
• groundlessness noun

Word History and Origins

Origin of groundless¹

before 900; Middle English: bottomless, unfathomable; Old English grundlēas. See ground ¹, -less

Example Sentences

“The impact on the bookings has been quite hard,” said Patel, who called the lawsuit groundless.

Read more on The Wall Street Journal

The long-term rise in beef prices has provoked market participants into a spate of finger-pointing, not all of which is groundless.

Read more on Los Angeles Times

Beijing at the time called the accusations "groundless".

Read more on Barron's

"But all these claims are groundless and without proof."

Read more on BBC

The corporation, incidentally, said "these continuing attacks on BBC journalism are completely groundless – it is simply false to say that we give any political party any less scrutiny than any other".

Read more on BBC

Related Words

• baseless 
• false 
• flimsy 
• gratuitous 
• illogical 
• illusory 
• unfounded 
• unjustified 
• unsupported 
• unwarranted