Definitions

1. adverb

used to indicate a time, typically the tenth, in a series of events or occasions, especially in formal or poetic contexts.

“The king’s umptieth anniversary of ruling the kingdom was celebrated with grand festivities.”

2. noun

a tenth occurrence of something.

“The umptieth time the alarm sounded, John finally woke up and turned it off.”

3. adjective

occurring or happening for the tenth time.

“The umptieth year of the company’s existence was marked by significant growth.”