Definition of baseless adjective from the Oxford Advanced Learner's Dictionary

 

baseless

 adjective
adjective
BrE BrE//ˈbeɪsləs//
 
; NAmE NAmE//ˈbeɪsləs//
 
(formal)
 
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not supported by good reasons or facts synonym unfounded The rumours were completely baseless.
See the Oxford Advanced American Dictionary entry: baseless