1. people who intrude or force themselves into places where they are not wanted or welcome

Examples

• The security guards quickly removed the obtruders from the private event.
• Several obtruders tried to enter the restricted area without permission.
• The homeowner called police to report obtruders on his property.
• The meeting was disrupted by obtruders who had not been invited.
• Signs were posted to warn potential obtruders that the area was off-limits.
• The obtruders were escorted out of the building by security personnel.