Kangaroo word: umpteenth
Joey word: nth
Definitions in relation to their use in kangaroo words, taken from Google Dictionary, and edited for formatting.
umpteenth (adjective): used to emphasize that something has happened on many other occasions.
nth (adjective): denoting an unspecified member of a series of numbers or enumerated items.
The letters N, T, and H found within the kangaroo word “umpteenth” arrange in the listed order to complete the joey word “nth”. While a word can have multiple definitions, in relation to their use with kangaroo words, these two words share a similar meaning: unspecified number.