General:
* Infested: This emphasizes the presence of something unwanted and undesirable.
* Beset: This implies a persistent and often unwelcome presence.
* Occupied: This suggests a presence that is unwelcome or unsettling.
* Ghostly: This focuses on the supernatural or spectral aspect.
* Spectral: Similar to ghostly, this emphasizes the ghostly nature of the presence.
* Eerie: This suggests a feeling of unease and dread.
* Uncanny: This implies something unsettling and strange, often with an inexplicable element.
* Spooked: This emphasizes a feeling of fear or nervousness.
* Haunted by: This emphasizes the feeling of being pursued or tormented.
More specific:
* Tormented: This emphasizes a sense of suffering or distress.
* Troubled: This suggests a feeling of worry or anxiety.
* Cursed: This implies a supernatural force that brings misfortune.
* Persecuted: This emphasizes a sense of being hunted or harassed.
* Oppressed: This suggests a feeling of being weighed down or burdened.
* Pestilent: This emphasizes a sense of sickness or decay.
Figurative:
* Preoccupied: This emphasizes a mental state of being distracted or consumed by something.
* Lingered: This suggests that something is lingering or persisting.
* Echoing: This implies that something is repeating or recurring.
* Stuck with: This suggests that something is difficult to escape or move on from.
The best synonym for "haunted" will depend on the specific situation and the desired nuance.