False accusations (or groundless accusations or unfounded accusations or false allegations or false claims) can be in any of the following contexts:
When there is insufficient supporting evidence to determine whether an accusation is true or false, it is described as "unsubstantiated" or "unfounded". Accusations that are determined to be false based on corroborating evidence can be divided into three categories:
A false allegation can occur as the result of intentional lying on the part of the accuser; or unintentionally, due to a confabulation, either arising spontaneously due to mental illness or resulting from deliberate or accidental suggestive questioning, or faulty interviewing techniques. Researchers Poole and Lindsay suggested in 1997 applying separate labels to the two concepts, proposing the term "false allegations" be used specifically when the accuser is aware they are lying, and "false suspicions" for the wider range of false accusations in which suggestive questioning may have been involved.