Etymology

ninetieth

nine·ti·eth
N1I1N1E1T1I1E1T1H4

Today it means: The ordinal form of the number ninety. Full definition →

Middle English nyntithe
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The story

  1. Middle English · inherited fromnyntithe
  2. English todayninetieth

From earlier ninteth, from Middle English nyntithe; for the modern form, see the etymological notes at twentieth.

Etymology from Wiktionary, CC BY-SA 4.0.