Word: horsefeathers
Part of speech: Noun
Syllables: horse
feath
ers
Definition: Plural of horsefeather (singular not used)
Morphemes:
Affix: horse
Language: en
PoS: Noun
Meaning: horseplay; tomfoolery
Affix: feather
Language: en
PoS: Noun
Meaning: Long hair on the lower legs of a dog or horse, especially a draft horse, notably the Clydesdale breed. Narrowly only the rear hair.
Affix: -s
Language: en
PoS: Suffix
Meaning: Used to form many pluralia tantum (nouns that are almost or entirely without singular forms).