Bad manners and Slip of the tongue

Bad manners noun - Impoliteness resulting from ignorance.

Slip of the tongue and bad manners are semantically related. In some cases you can use "Slip of the tongue" instead a noun phrase "Bad manners".

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

Bad manners and slip of the tongue are semantically related. Sometimes you can use "Bad manners" instead a noun phrase "Slip of the tongue".