baseless accusations/allegations/rumours
1 without supporting facts:
Investigation showed these were baseless accusations.
I trust that it may help to end the baseless hostility prevailing between economic theory and economic history.
The commercial artist had replaced the temple's original fluted baseless columns with columns resembling the world's most famous bottle.
Nor does it require that the varying religious traditions reject each other's accounts as false and baseless.
As the regime was determined not to dismiss any case at all, no matter how baseless, thousands lived in prisons with their fates undetermined.
We now know, though, that his worry was baseless, since central banks exercise control through voluntary clearing accounts that intermediaries maintain with them.
Such a charge seems to me baseless.
Such anxieties were not baseless.
Though not utterly baseless, this mystique of a secret craft obscures the primary fact that most music is kept in circulation by the preferences and listening habits of non-specialist audiences.
