What does anonymising mean?
Anonymising is the act of removing or obscuring information that identifies a person, organisation, record, or contribution. It is commonly used when personal data, medical records, quotations, photographs, or online posts are being prepared for research, publication, or wider circulation. A researcher may anonymise a dataset by replacing names and direct identifiers with codes, while an editor may anonymise a source by withholding identifying details. The term is neutral in tone but carries a useful practical implication: removing identity does not guarantee that the material can never be reidentified, especially when combinations of indirect details remain distinctive. Anonymising is chiefly associated with British spelling; American usage normally favours “anonymizing.” As the present participle of “anonymise,” it also functions nominally in labels such as “anonymising data.” The word belongs to a long English vocabulary derived from Greek roots meaning “without name,” reflecting its central function: making a person or record anonymous while leaving the underlying material otherwise recognisable.
verbRemoving or obscuring information that identifies a person, organisation, record, or contribution, so that the person or source cannot readily be identified.
- Removing or obscuring identifying information from a person, record, dataset, or other material so that the person or source cannot readily be identified.
"The researchers are anonymising the participants' records before publishing the results."
"The team is anonymising customer records before sharing the dataset with external researchers."
"The editor is responsible for anonymising sensitive details in the sources' quotations."
Anonymising makes a person or record nameless on paper, but it does not necessarily make the underlying identity impossible to discover.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Where does anonymising come from?
The word belongs to an English family based on Greek anōnymos, meaning “without name,” formed from an- (“without”) and ónoma (“name”). The English adjective anonymous and noun anonymity developed from this source, and the verb anonymise was formed from anonymous. The present participle anonymising combines the British verb form with -ing, while anonymizing is the usual American equivalent.
Related word forms
How anonymising is actually used
The spelling is chiefly British; American usage normally uses “anonymizing.” The term is common in professional and technical contexts involving privacy, research, publishing, and data protection. It is normally used as the present participle of “anonymise”.