(slang, UK, Australian, transitive) To flirt with; to approach and speak to (someone), seeking romance, love, sex, etc.
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Crack onto means: To flirt with; to approach and speak to (someone), seeking romance, love, sex, etc.. It is mainly Australian English and may not be understood outside that context. There is no real cause for parental concern; it is descriptive vocabulary rather than risky behaviour. If your teen uses it, context will usually make the intent clear. A short, curious question about where they heard it is usually all that is needed to know whether to follow up.
Slang is read by different audiences for very different reasons. The For parents view re-explains the term in plain, non-judgemental language so a caregiver can understand what their child means without needing the surrounding subculture. The For English learners view focuses on register (when it's safe to use), formal alternatives, and common mistakes — what a textbook won't teach you.
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How people talk about dating apps, modern romance, and the situationships they swear they're over — from ghosting and breadcrumbing to soft-launching, hard-launching, and the ick.
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