Does 2026 slang like "aura farming" risk imprecise meaning in formal writing?

The EF GO Blog list shows these terms spreading fast, yet their connotations still depend on context and can shift the intended register. In IELTS Task 2, a single vague expression often costs points under the lexical resource descriptor even when the overall idea is understood. Established forms keep the meaning stable across readers, while new slang may require later correction that never happens in timed exams or job emails.