baseless

About 0.35 uses per million words.

Meaning

1. adjective Of reasoning: based on something that is not true, or not based on solid reasons or facts; unfounded; without a basis.

   baseless accusations; baseless rumors

2. adjective Without a physical base.

Similar words

groundless unfounded unwarranted unsupported idle ill-founded ungrounded unreasonable unsubstantiated unjustified

Often followed by

and fabric as charges accusations or charge allegations assumption