Word: nightmarishly
Part of speech: Adverb
Syllables: night
mar
ish
ly
Definition: In a nightmarish manner; extremely alarming
Morphemes:
Affix: night
Language: en
PoS: Noun
Meaning: Nightfall.
Affix: mare
Language: en
Meaning: evil spirit believed to afflict a sleeping person
Affix: -ish
Language: en
PoS: Suffix
Meaning: Somewhat, rather.
Affix: -ly
Language: en
PoS: Suffix
Meaning: Used to form adverbs from adjectives.