What does fiftieth mean?
'Fiftieth' is the ordinal form of fifty, indicating position number fifty in a sequence or series. As an adjective, it modifies nouns to mark something as coming after forty-nine others — a fiftieth birthday, a fiftieth state, a fiftieth chapter. As a noun, it names one of fifty equal parts of a whole, functioning much like other fractional terms such as 'tenth' or 'hundredth'. The word carries particular cultural weight in the context of anniversaries: a fiftieth wedding anniversary is traditionally known as the golden anniversary, a milestone celebrated across many cultures. Formed from 'fifty' plus the ordinal suffix '-eth', it follows a regular English pattern seen in 'twentieth', 'thirtieth', and 'fortieth'. Neutral in tone and universally understood across British and American English, 'fiftieth' is a practical term for marking milestones in personal life, history, publishing, and measurement alike.
Coming next after the forty-ninth in order; being number fifty in a sequence.
"Hawaii became the fiftieth state of the United States in 1959."
One of fifty equal parts of a whole; also, the person or thing occupying the fiftieth position.
"A fiftieth of the total budget was allocated to marketing."
When used as a fraction, the plural is 'fiftieths'.
Used only when 'fiftieth' functions as a fraction (one of fifty equal parts); the ordinal sense does not take a plural.
"The recipe calls for three fiftieths of a gram of saffron."
In many Western traditions, a fiftieth anniversary is called the 'golden anniversary' — a custom dating back to medieval Europe, when a wife was presented with a gold wreath on her fiftieth year of marriage.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Etymology of fiftieth
'Fiftieth' derives from Old English 'fīftig' (fifty) combined with the Germanic ordinal suffix '-eth', which forms ordinals from cardinal numbers. The root traces back further to Proto-Germanic '*fimf tigus', literally meaning 'five tens'. Cognate forms appear throughout the Germanic language family, including German 'fünfzigste' and Dutch 'vijftigste', all built on the same five-based construction.
Related word forms
How fiftieth is actually used
'Fiftieth' is neutral in register and appears in both formal and everyday contexts. It is commonly used with anniversaries, birthdays, and ordinal numbering in lists or sequences. When written as a fraction, 'fiftieth' functions as a noun with plural form 'fiftieths'.
Easily confused with fiftieth
'Fifteenth' denotes position fifteen in a sequence, while 'fiftieth' denotes position fifty.