What does tagging mean?
Tagging means putting a label, marker, or identifier on something so that it can be recognized, classified, processed, or found later. The word applies to physical objects, such as animals, luggage, merchandise, and museum specimens, as well as to digital material such as photographs, documents, and email messages. In digital settings, tagging can include adding searchable keywords or metadata that describe an image, person, location, or piece of content. The phrase “tagging” also has a contemporary privacy dimension because technologies that assign or follow identifiers can record people’s movements and online activity. Although tagging is usually practical and neutral, it can sound intrusive when the tags are difficult to notice or difficult to remove. The word is especially useful when discussing both everyday systems of organization and the less visible ways information is attached to people, products, and online content.
The act of attaching a label or marker to something, or adding identifying or descriptive information to it.
"Tagging the samples prevented any confusion during transport."
The noun may describe either a single instance of attaching a tag or the general process. In digital contexts, it often refers to adding metadata or searchable keywords.
To attach a label or marker to something, or to add identifying or descriptive information to it.
"The system automatically tags each uploaded image with its location and date."
When used for online content, this verb often implies adding metadata or keywords rather than visibly marking the item.
The plural is uncommon. “Tagging” is also widely used as an uncountable noun for the activity or process, so “taggings” is normally reserved for separate instances.
"The two taggings appeared on the same item and were therefore removed."
A tag may look harmless, but digital tagging can follow a person from one place to the next.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Where does tagging come from?
“Tagging” is the verbal noun formed from the English verb “tag,” whose origins are medieval but not entirely certain. The verb originally referred to attaching a hanging label or “tag” to an object. The additional meanings developed from the broader practice of marking something for identification, categorization, attention, or automated processing. “Tagging” therefore retains both the physical sense of applying a label and the modern sense of adding descriptive information to digital content.
Related word forms
How tagging is actually used
In ordinary contexts, tagging often suggests attaching a visible or physical marker. In computing and digital media, it commonly refers to adding metadata, identifiers, or searchable labels. Privacy concerns have made online tracking increasingly salient in modern usage.