U

Uni: University.
Unit: Flat, apartment.
Up oneself: Have a high opinion of oneself. ("He's really up himself.")
Up somebody, get: To rebuke somebody. ("The boss got up me for being late.")
Useless as an ashtray on a motorbike: Incompetent or unhelpful person or thing.
Ute Utility vehicle.

V

Vedgies: Vegetables.
Vejjo: Vegetarian.

W

Waggin' school: Playing truant.
Walkabout, it's gone: It's lost, can't be found.
Whinge: Complain.
Whiteant To criticize something to deter somebody from buying it. A car dealer might whiteant another dealer's cars or a real estate salesman might whiteant another agent's property.
Wobbly: Excitable behavior. ("I complained about the food and the waiter threw a wobbly.")
Wog: Flu or trivial illness.
Woop Woop: Invented name for any small unimportant town. ("He lives in Woop Woop.")
Wowser: Straight-laced person, prude, puritan, spoilsport.

X

XXXX: Pronounced Four X, brand of beer made in Queensland.

Y

Yabber: Talk (a lot).
Yakka: Work (noun).
Yewy: U-turn in traffic. ("Chuck a yewy at the next traffic lights.")
Yobbo: An uncouth person.
Youse: You.

Z

Zack: Sixpence (5 cents). ("It isn't worth a zack.")

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