anecdotal
adj.adj. describing information based on personal stories rather than facts or careful study. You use this when someone's evidence comes from what they saw or heard, not from scientific data.
adj. based on personal accounts or individual observations rather than systematic research or rigorous data analysis. Often used to qualify evidence that may be unreliable or unrepresentative of a broader trend.
The evidence for this new diet is mostly anecdotal.
While there is anecdotal evidence that the herb helps with sleep, no clinical trials have confirmed these claims.
Scientists often dismiss anecdotal reports of rare phenomena until a sufficient number of documented cases allows for a formal statistical investigation into the underlying cause.
From anecdote + -al.
Typically used attributively before a noun like 'evidence', 'reports', or 'accounts'.
anecdotal of evidenceanecdotal evidenceAnecdotal is an adjective and should modify the noun directly without a preposition.