Green’s Dictionary of Slang

(Aus.) a show-off, a braggart.

1967		‘Whisper All Aussie Dict.’ in Kings Cross Whisper (Sydney) xxxii 6/1: big noter: A braggart who uses money to impress birds.
1972		A. Chipper Aussie Swearers Guide 26: Big Noter. Thje big note the Big Noter sounds is on his own glorfication [...] In basic Australian, he’s got tickets on himself.
1990		Tupper & Wortley Aus. Prison Sl. Gloss. 🌐 Big note. To act in a boastful manner. Thus, a ‘bignoter’ is a braggard [sic].
1993		M.B. ‘Chopper’ Read How to Shoot Friends 203: ‘Around the traps’ is an expression used to describe what happens when big noters and wishful thinkers get together for a Saturday night piss up.
2000		S. Maloney Big Ask 155: Noel Webb [...] smirked at this [i.e. comment], as though I’d exposed myself as a fatuous big-noter.
2006		Cook Islands’ Herald 11 Mar. 🌐 When he heard the PM was aware of his whereabouts and was about to visit the sick, the former Parliamentary big noter suddenly got well again and fled.
2010		M. Cryer Godzone Dict. 16: big-noter A person who consistently draws attention to their own success, wealth, high-ranking contacts and superior ideas.