IPA: /ˈfɪfθiːnθ/
KK: /ˈfɪfˌtiːnθ/
A term used to describe the position of something that is number 15 in a sequence or series.
She finished in fifteenth place in the race.
Fifteenth → It is formed from "five" (from Old English "fīf", meaning the number five) and "-teenth" (a suffix used to denote ordinal numbers, derived from Old English "-tīene", meaning ten). The word "fifteenth" means the ordinal number that comes after fourteenth and before sixteenth, indicating the position in a sequence.
Think of the number 'five' and remember that 'fifteenth' refers to the position that comes after the fourteenth, making it the fifth in the sequence of tens.
No commonly confused words.