fifteenth
UK[ˌfɪfˈtiːnθ]US[ˌfɪfˈtiːnθ]
adj
coming next after the fourteenth in position or time
n
position 15 in a countable series of things; one part in fifteen equal parts of something
Morpheme Breakdown
fifteen
th
fifteen
th
Etymology
the word "fifteenth" is a transparent ordinal number formation in english, directly built upon the cardinal number "fifteen." the cardinal "fifteen" itself originates from old english "fīftīene," a compound of "fīf" (five) and "tīene" (ten), following the common germanic pattern for numbers 13-19. the ordinal suffix "-th," derived from old english "-þa" or "-þe," is appended to the cardinal form to denote position in a sequence. this systematic process, where the cardinal number provides the quantity and the suffix provides the ordinal function, illustrates the regular and logical development of number words from old english to modern english.
Analysis
Structure: fifteen + th
fifteen (from old english 'fīftīene', meaning five plus ten); th (from old english '-þa', '-þe', an ordinal number suffix)
Examples
we are celebrating our fifteenth wedding anniversary this june.
he finished in fifteenth place in the marathon.
approximately one fifteenth of the total budget was allocated to research.