
Intrude
Unwanted Presence
Used when someone is where they're not supposed to be, often making others uncomfortable.
He seemed to intrude at the party, standing awkwardly alone.
Lack of Invitation
Highlights the absence of an invitation or right to join a situation or conversation.
I felt like I'd intrude if I joined their dinner uninvited.
Diplomatic Sensitivity
Often applicable in situations requiring tact or discretion to avoid offending others.
I didn't want to intrude with my questions during their mourning.