Word: eighteen
Part of speech: Numeral
Syllables: eight
een
Definition: The cardinal number occurring after seventeen and before nineteen, represented in Roman numerals as XVIII and in Arabic numerals as 18.
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.