twelfth
UK: twelfθ | US: twelfθ
Definition
adj. constituting number twelve in a sequence
n. one of twelve equal parts
Structure
twelf <twelve>th <ordinal suffix>twelf <twelve>th <ordinal suffix>
Etymology
The word "twelfth" evolved from Old English "twelfta," combining "twelf" (twelve) with the ordinal suffix "-tha" (modern "-th"). This structure mirrors other English ordinal numbers (e.g., "fourth," "fifth"), where the root number is modified by "-th" to indicate position in a sequence. The spelling adjustment ("twelf" to "twelft-") reflects phonetic assimilation for smoother pronunciation.
Examples
December is the twelfth month of the year.
She finished in twelfth place in the race.
Cut the cake into twelfth parts for equal sharing.
The twelfth chapter of the book reveals the climax.
His birthday falls on the twelfth of November.