Slip of the tongue and Simple mindedness

Slip of the tongue noun - An accidental and usually trivial mistake in speaking.

Simple mindedness and slip of the tongue are semantically related In some cases you can replace phrase "Simple mindedness" with "Slip of the tongue", this phrases are similar.

Simple mindedness noun - A lack of penetration or subtlety.

Slip of the tongue and simple mindedness are semantically related in mistake topic. You can use "Slip of the tongue" instead a noun phrase "Simple mindedness".