Terminology Drift Compounding

Terminology Drift Compounding treats every untracked glossary decision as a small liability that multiplies with each locale, release, and client handoff. A single product term rendered three ways across German, Japanese, and Brazilian Portuguese forces QA to re-review the same strings on every sprint, and the cost lands on the agency retainer rather than the platform. The framework asks agencies to measure drift before adding languages: count how many source terms lack an approved translation, then multiply by the number of active locales and release cadence. Platforms that enforce shared glossaries at the string level, such as DeepL's glossary rules or Lokalise's custom AI profiles, stop the compounding at the source. Without that gate, a 12-locale client program turns a 200-term glossary gap into thousands of review decisions per quarter, and the margin on multilingual delivery quietly disappears.