1. a person who intrudes or forces themselves into a place or situation where they are not wanted or invited

Examples

• The security guard quickly escorted the obtruder from the private event.
• She felt like an obtruder at the family gathering where she barely knew anyone.
• The obtruder was asked to leave the meeting as it was for members only.
• He didn’t want to be seen as an obtruder, so he waited for an invitation.
• The obtruder’s presence made everyone uncomfortable at the dinner party.
• Store employees are trained to identify potential obtruders in restricted areas.