yaffler
/ˈjaflə
/noun Australian informal
(In Tasmania) a person who is very talkative, especially someone who talks nonsense or boasts: they reckon he is a yaffler who talks the talk but can’t back it up...
- He thought he was a yaffler. He supposed he liked him all right, but his endless opinions on everything bored him.
- He is a yaffler, but also a dedicated semi professional prospector with a wealth of knowledge and experience.
- Maybe I'm a bit of a yaffler anyway but it was all good.
Origin
Late 19th century: from British dialect yaffle 'talk fast and meaninglessly'.