"Some rando at the servo said g'day."
Where "Rando" Comes From
Unlike most of the entries on this list, "rando" isn't short for anyone's name — it's simply "random" clipped down and given the familiar "-o" ending, the same trick behind occupation nicknames like "garbo" and "ambo."
It's slipped into general Australian slang well beyond its nickname roots, now used casually anywhere in the English-speaking world to mean an unknown or unexpected stranger.
How Aussies Actually Use It
Used to describe someone you don't know popping up unexpectedly — "some rando at the party," "a rando messaged me" — always with a slightly amused, offhand tone rather than anything serious.
It's one of the rare "-o" words that describes a stranger rather than a friend, which makes it stand out from the rest of this nickname family.
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