The Bilingual Confusion
Google Docs is designed for a global audience and features intelligent language detection. By default, if you are typing an English document and suddenly paste in a long paragraph of French text, Google Docs will automatically detect the shift. It may silently change the document’s underlying language setting for that specific section, activating the French spell-checker and grammar rules. While this sounds helpful, it creates massive headaches if you are writing a technical document full of code snippets or foreign names, as Docs will suddenly start highlighting your English words with angry red squiggly lines, assuming you are misspelling French words.
Locking the Document Language
To ensure consistent spell-checking and stop Google Docs from automatically changing the language based on the text you type or paste, you must explicitly lock the document’s language settings.
First, highlight the entire contents of your document by pressing Ctrl+A (Windows/Linux) or Command+A (Mac). With everything selected, navigate to the top menu bar and click on File. Scroll down the drop-down menu near the bottom and hover over Language. A massive fly-out menu will appear listing dozens of languages. Manually click on your preferred primary language (e.g., English (United Kingdom)). By explicitly forcing the entire highlighted block to a specific language, you override the automatic detection. Furthermore, if you paste text in the future, use Ctrl+Shift+V to “Paste without formatting,” which strips away any hidden language tags attached to the copied text, forcing it to adopt your document’s locked language.