Word: knuckleheadedness
Part of speech: Noun
Syllables: knu
ckle
he
aded
ness
Definition: The state or condition of being knuckleheaded; foolishness or ineptitude.
Morphemes:
Affix: knuckle
Language: en
PoS: Noun
Meaning: A contrivance, usually of brass or iron, and furnished with points, worn to protect the hand, to add force to a blow, and to disfigure the person struck; a knuckle duster.
Affix: head
Language: en
Meaning: noun
Affix: -ed
Language: en
PoS: Suffix
Meaning: Used to form adjectives from nouns, in the sense of having the object represented by the noun.
Affix: -ness
Language: en
PoS: Suffix
Meaning: Appended to words of other parts of speech to form nouns (often nonce words or terms in philosophy) meaning the state/quality/measure of the idea represented by these words.