Word: slaphappy
Part of speech: Adjective
Syllables: slap
hap
py
Definition: In a humorous mood as a result of fatigue; silly from being tired.
Morphemes:
Affix: slap
Language: en
PoS: Noun
Meaning: The sound of such a blow.
Affix: -happy
Language: en
PoS: Suffix
Meaning: Euphoric, giddy, or crazed.