Morphology-sensitive pseudonymisation goes beyond simply replacing personal data with random identifiers (like pseudonyms); it ensures that these pseudonyms fit the grammatical rules of the language being used. This is especially important for languages with complex grammatical structures, where word endings or forms change based on gender, number, or case (e.g., in languages like Russian, Latvian, or Arabic).
For example, in a sentence where a person’s name appears, simply replacing the name with a generic pseudonym may distort the grammar of the sentence. In morphology-sensitive pseudonymisation, the pseudonym will be adjusted to match the grammatical form, so the sentence still flows naturally. If a name is in a particular case (like possessive or plural), the pseudonym would be changed to reflect the same case.
This feature is particularly valuable in legal documents, healthcare records, or multilingual environments where maintaining the integrity of the text is essential for readability and accurate communication. By preserving grammatical accuracy, morphology-sensitive pseudonymisation ensures that the anonymised document remains coherent and useful, even after sensitive data has been replaced.