Meanings
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1
adj
coming next after the seventeenth in position
The eighteenth example follows the same pattern.
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2
noun
position 18 in a countable series of things
The eighteenth example follows the same pattern.
Thesaurus
Synonyms
xviiith
Etymology
Inherited from Middle English eightetenthe, eightetethe, from Old English eahtatēoþa, from Proto-Germanic *ahtudô tehundô. Equivalent to eighteen + -th (ordinal suffix).