IPA: /ʌnˈtæɡd/
KK: /ʌnˈtæɡd/
Describing something that does not have a label or identifier attached to it.
The files were left untagged, making it difficult to find the right document.
Untagged → It is formed from the prefix "un-" (meaning not) and the root "tag" (from Old Norse *tagga*, meaning to attach or label) with the suffix "-ed" (indicating a past participle). The word "untagged" means not labeled or not attached with a tag.
Think of 'not' ('un-') having a 'label' ('tag') attached to it — that's why untagged means something that is not labeled.