Answer: incubus

AnswerCrossword Clue
INCUBUS

Nocturnal demon

INCUBUS

Nocturnal demonic visitor

INCUBUS

Anything burdensome.

INCUBUS
Nightmare
INCUBUS
Certain demon
INCUBUSMedieval evil spirit
INCUBUSMale demon
INCUBUSNightmare personified
INCUBUSNight demon