энный angolul

nth▼(occurring at position n)
adjective
[UK: ˈenθ] [US: ˈenθ]

umpteenth▼(informal: occurring in a relatively large but unspecified position in a series)
adjective
[UK: ˈʌmp.tiːnθ] [US: ˈʌmp.ˌtinθ]