Word: sundown
Part of speech: Verb
Syllables: sun
down
Definition: to experience an episode or an onset of some detrimental mental condition like agitation, anxiety, hallucination or dementia, daily at nightfall.
Morphemes:
Affix: sun
Language: en
PoS: Noun
Meaning: Sunrise or sunset.
Affix: down
Language: en
PoS: Adjective
Meaning: Sad, unhappy, depressed, feeling low.