haunting
US /ˈhɑːn.t̬ɪŋ/
UK /ˈhɑːn.t̬ɪŋ/

1.
poignant and evocative; remaining in the mind
:
•
The melody was so beautiful and haunting.
•
He couldn't shake off the haunting image of the accident.
1.
present participle of haunt
:
•
The old house was rumored to be haunting the new residents.
•
The ghost was haunting the castle for centuries.