"pertaining to anecdotes, of the nature of an anecdote," 1794, from anecdote + -al (1). Related: Anecdotally. Anecdotical is attested from 1744.
anecdotal evidence
anecdotal conversation
an anecdotal history of jazz
Andy
*ane-
-ane
anear
anecdotage
anecdotal
anecdote
anechoic
anemia
anemic
anemo-