'slip of the tongue' definitions:

Definition of 'slip of the tongue'

From: WordNet
noun
An accidental and usually trivial mistake in speaking

Definition of 'slip of the tongue'

From: GCIDE
  • slip of the tongue \slip of the tongue\ n. an unintentional utterance; a mistake in speaking.
  • Syn: slip of the lip. [WordNet 1.5 +PJC]

Synonyms of 'slip of the tongue'

From: Moby Thesaurus