interloper
inter|lop|er /'ɪntərloʊpər/ (interlopers)
[N-COUNT]
If you describe someone as an interloper, you mean that they have come into a situation or a place where they are not wanted or do not belong.
She had no wish to share her father with any outsider and regarded us as interlopers.
= intruder
[N-COUNT]
If you describe someone as an interloper, you mean that they have come into a situation or a place where they are not wanted or do not belong.
She had no wish to share her father with any outsider and regarded us as interlopers.
= intruder