Ghost

duch

(spirit appearing after death)

fantom

(spirit appearing after death)

mara

(spirit appearing after death)

upiór

(spirit appearing after death)

widmo

(spirit appearing after death)

widziadło

(spirit appearing after death)

zjawa

(spirit appearing after death)

zwid

(spirit appearing after death)

ghostować

((transitive) to stop communicating with (someone) on social media, though text messages, etc., without explanation, especially as a way of ending a relationship; to end a relationship with (someone) by stopping all communication without explanation)