groundless

Ms Nemtsova calls the student’s claims “groundless and manipulative” and he admits he has no actual evidence.

Chinese state media has called this accusation "groundless".

Back then, it was called McCarthyism, after the Wisconsin Republican senator who wielded groundless accusations as recklessly as Trump.

Cyprus government spokesman Konstantinos Letymbiotis repeated that any suggestion that Cyprus – either through its infrastructure or territory – would be involved in any military operation in Lebanon is “totally groundless.”

Zverev's lawyers said the penalty order issued in October is "therefore now groundless".