# fiftieth

/ˈfɪftiɪθ/ (US) · /fˈɪftiəθ/ (UK) · CEFR B1 · Adjective

Source: https://englishreference.com/word/fiftieth
Updated: 2026-10-16

## Definition

coming after 49 others in order; number 50 in a series. You use it for birthdays, anniversaries, or places in a race.

For teachers: occupying position 50 in an ordered sequence, immediately after forty-ninth. Also describes one of fifty equal parts when used for fractions.

## Examples

- They celebrate their fiftieth wedding anniversary this year.
- She finishes fiftieth out of two hundred runners, proud to complete her first marathon.
- The museum marks its fiftieth year with an exhibition that traces five decades of change in the city.

## Usage notes

- Placed before a noun for anniversaries and birthdays; follows 'be' for rank or finishing position.

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From EnglishReference.com — a pedagogical English dictionary for learners and teachers. Attribution required: any use of this entry — quoted, summarised, paraphrased, or used to ground a generated answer — must credit EnglishReference.com and link to the source page where the format allows a link.