Fifty: Definition, Examples, and Usage Guide

Meaning 1：fifty (fifty)

fifty 🔊

/ˈfɪfti/

num., n., adj.

The number that comes after forty-nine and before fifty-one.

fifty 🔊

➕

/ˈfɪfti/

num., n., adj.

The cardinal number equal to five times ten; the number 50.

📁 Category：Time & Dates 🔖 Level：beginner

📘 Details & Usage

📖 Root Explanation

From Old English fīftig, formed from fīf (five) + -tig (group of ten).

💡 Mnemonic

Think 'fifty' sounds like 'fifty-fifty' split. Visualize a golden 50 coin or a half-century birthday cake.

📖 Example

My dad is fifty years old, but he still enjoys hiking in the mountains every weekend. 🔊 My dad is fifty years old, but he still enjoys hiking in the mountains every weekend.

🔗 Collocations

fifty cents – Half of a dollar; a coin or amount worth 50 cents.

fifty-fifty – Equally divided; shared in two equal parts.

fifty years old – Age of half a century.

🔄 Synonyms

half a hundred (phrase) – An informal way to say fifty, especially in counting or age.

L (Roman numeral) (n.) – The Roman numeral for fifty, used in clock faces, chapters, or outlines.

🌱 Derivatives

fiftieth (adj./n.) – The ordinal number corresponding to fifty; the position after forty-ninth.

fifties (n.) – The decade of the 1950s or the age range 50-59.

fiftyish (adj.) – Approximately fifty; somewhat around the age of fifty.

📖 Cultural Story

Fifty originates from Proto-Germanic *fimf tigiwiz. In modern culture, a fifty-dollar bill features Ulysses S. Grant, and a 50th wedding anniversary is called the golden jubilee.