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deso

Australian slang for the designated driver — the person in the group who volunteers (or draws the short straw) to stay sober and drive everyone else home safely after a night of drinking.

ˈdɛsoʊ141 viewsLast reviewed Jun 29, 2026+ Add a definition
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#1·Apr 28, 2026

Australian slang for the designated driver — the person in the group who volunteers (or draws the short straw) to stay sober and drive everyone else home safely after a night of drinking. Short for 'designated driver' via 'desig' to 'deso,' it's a very Australian compression. Being the deso earns you social credit and the eternal gratitude of your mates, even if it means a night of sipping lemonade while everyone else gets loose.

Jake was the deso this weekend, so the rest of them could finally let loose at the footy after-party.
Origin: Australian English abbreviation of 'designated (driver),' following the common Aussie pattern of clipping words and adding '-o' (cf. 'arvo' for afternoon, 'servo' for service station). Editorial expansion authored on Slangora.
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#2·Apr 27, 2026

(AU, slang) A designated driver.

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