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

• groundlessness noun
• groundlessly adverb

Word History and Origins

Origin of groundless¹

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

Example Sentences

Lot of reasons for that, it’s not groundless optimism.

From Salon

The Chinese embassy in London called the report "groundless and absurd", adding that China respects freedom of speech in the UK and elsewhere.

From BBC

Israel has rejected her report as "groundless", saying it would "join the dustbin of history".

From BBC

But China's Commerce Ministry rebuffed this as "groundless with no factual basis".

From BBC

“Any claim that the city desires to financially harm DuPont is groundless and simply not true,” said Friedman.

From Los Angeles Times

Related Words

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