| Gabba, the (n) | Woolloongabba, the Brisbane cricket ground |
| galah (adj) | noisy idiot, also a pink-and-grey parrot named after the noisy parrot |
| gaol (n) | jail (pronounced the same) |
| gap year (n) (adj) | a period of time taken off school, usually between high school and university, to travel and work. |
| gap (n) | The difference in what Medicare pays for a medical service and what the healthcare provider charges. The patient has to make up the difference. |
| garbo (n) | garbage truck driver |
| gas (n) | propane, LPG |
| gasper (n) | cigarette |
| gazetted (v) | to be made official in government publications "The company was gazetted last week." |
| gazumped (v) | outbid "He was gazumped on that property." |
| g'day | good day standard Australian greeting |
| get nicked (v) | go away |
| get the arse (adj) | to get fired |
| getting up, getting the shits up (v) | to verbally abuse someone "I'm getting up him for the rent." |
| gin (n) | offensive name for an Aboriginal woman |
| ging (n) | slingshot |
| Ginger (n) | nickname for a person with red hair |
| Girl Guides (n) | similar to Girl Scouts |
| give a gobful (v) | to verbally abuse |
| give 'em some stick (v) | verbally abusing someone |
| give it a burl (v) | try it out |
| give it a miss (v) | to avoid something |
| give them curry (v) | give them trouble |
| give up (n) (v) | the equivalent of a punt in Australian Rules Football (Footy) |
| glandular fever (n) | mononucleosis |
| globe (n) | lightbulb |
| go for a burn (v) | to test drive a car, to drive fast |
| go like clappers, go like a shower of shit (v) | to go very fast |
| goanna (n) | monitor lizard Early arrivals mistook them for iguanas, hence the name. |
| gob-smacked (adj) | very surprised, "mouth agape" "He was gob-smacked when he saw the bill." |
| God bless his cotton socks. | He's completely wrong, but we still love him. |
| gold coin (n) | $1 or $2 Australian coins (gold-colored) "Admission to the charity fete by gold coin donation." |
| gone troppo (adj) | tropical madness, having too a good time |
| good nick (adj) | good condition "The old ute's in good nick." |
| good oil (adj) | good information, useful idea |
| good on ya | well done, good job Often just onya is used. |
| Good Sammy's (n) | the Good Samaritan charity sometimes just "Sammy's" |
| googie (n) | egg "I'll have a googie sanger." |
| good value (adj) | worthwhile "That ute is good value." |
| goss (n) (v) | gossip "What's the goss?" |
| grazier (n) | large scale sheep or cattle farmer |
| greenie (n) | environmentalist, member of the Greens Party |
| gridiron (n) | American football Football is soccer, Footy is Australian Rules Football, gridiron is American football. |
| grinning like a shot fox (adj) | happy, smug If you ever shot a fox, you'd know why. |
| grizzle (v) | to complain |
| grog (n) | beer, liquor |
| grommet (n) | young surfer |
| grouse (adj) | good, cool |
| grundies (n) | underwear |
| GST | Goods and Services Tax ten percent nationwide |
| guernsey (n) | jersey, shirt |
| gum sucker (n) | resident of Victoria |
| gum, gum tree (n) | eucalyptus tree |
| gunya (n) | temporary shelter Aboriginal: ganya |
| gurgler (n) | the drain "When the wife and kiddies left, my life went down the gurgler." |
| gutful of piss (adj) | drunk |
| gutzer, come a (v) | to have an accident; something that didn't work out |
| gyno (n) | gynecologist |
| gypboard (n) | Sheetrock, gyprock wallboard made of gypsum |