Word: eighteenth
Part of speech: Adjective
Syllables: eigh
teenth
Definition: The ordinal form of the number eighteen.
Morphemes:
Affix: eight
Language: en
PoS: Noun
Meaning: A numerical value equal to 8; the number following seven and preceding nine.
Affix: -teen
Language: en
PoS: Noun
Meaning: Used to form cardinal numbers from thirteen to nineteen.
Affix: -th
Language: en
PoS: Noun
Meaning: Used to form the ordinal numeral when the final term of the spelled number is not “first”, “second”, or “third”.