zillionth
/ˈzɪljənθ/
adjective
- Occurring after an extremely large, indefinite number of times; the latest in a seemingly endless series.
- This is the zillionth time I've asked you to be quiet.
- She watched the zillionth episode of her favorite show.
- He made the zillionth excuse for being late.
noun
- An extremely small fraction; one part in an indefinitely large number.
- There's not a zillionth of a chance that will happen.
- He doesn't care a zillionth about the rules.
- The difference is a zillionth of a second.