Word: eightieth
Part of speech: Adjective
Syllables: eight
i
eth
Definition: The ordinal form of the number eighty.
Morphemes:
Affix: eight
Language: en
PoS: Adjective
Meaning: obsolete spelling of eighth.
Affix: -ty
Language: en
PoS: Suffix
Meaning: Nonproductive suffix indicating single-digit integer multiples of ten
Affix: -eth
Language: en
PoS: Suffix
Meaning: used to create ordinal numbers from cardinal numbers ending in -y namely the multiples of ten (other than ten itself): 20, 30, 40, 50, 60, 70, 80, and 90; e.g. twentieth, thirtieth.