We don't have synonyms for tatler yet — it may be a rare, specialized, newly coined, or misspelled word. The closest thesaurus entries we have are tatter, tattler and tater.
(n) :
Obsolete form of tattler (“one who tells tales, or informs on others”). [One who tattles (notifies authorities of illicit behavior) or is inclined to do so; a tattletale.]
(n) :
Obsolete form of tattler (“one who tells tales, or informs on others”). [One who tattles (notifies authorities of illicit behavior) or is inclined to do so; a tattletale.]