To remove one or more tags from a contact:
- Go to the Contacts module.
- Click the 3-dot icon next to a contact.
💡 Tip: You can also bulk-select contacts from the list page and select Remove Tags from the More dropdown above list of contacts to remove tags from multiple contacts at once.
- Select Remove Tags.
- Select the tags that you want to remove.
- Click Remove Tags.
The selected tags have now been removed from the contact.
If a tag has been applied to any contact, that tag will be searchable in the list of tags when other users want to add tags to contacts. To remove it from the list of tags, you must remove the tag from all contacts that it's currently applied to. Here's how you can do this:
- Go to the Contacts module.
- Filter your contacts by the following details:
Filter Name: Tags
Condition: is any of
Value: (Enter the name of your tag here)
Now, you've filtered all of the contacts that have a certain tag applied to them. Select all of these contacts from the list page, and click the More dropdown, and then select Remove Tags. 
Select the tag that you want to remove, and click Remove Tags.
Now, this tag will be removed from all contacts that it is currently applied to, and it will no longer be findable in the list of tags that can be applied to contacts.