Search Dictionary
Definition of eighteen

eighteen

/ˌeɪˈtiːn/
eigh · teen

Plural:eighteens
•
Adjective:eighteenth
JUMP TO:

eighteen Lexical Profile

eighteen Game Scores & Validity

• adjective

1

Amounting to one more than seventeen; totaling two less than twenty.

Example

"The golf course features eighteen challenging holes surrounded by coastal dunes."


2

Being eighteen years old.

Example

"Once she was eighteen, she registered to vote in her first national election."

• noun

1

The cardinal number equivalent to the sum of ten and eight; one more than seventeen (represented in Arabic numerals as 18 and in Roman numerals as XVIII).

Example

"Eighteen is an even composite number divisible by one, two, three, six, nine, and itself."


2

The age of eighteen years, widely recognized in many jurisdictions as the legal age of majority.

Example

"At eighteen, young adults gain the legal right to sign contracts independently."

• pronoun

1

Eighteen people or things previously mentioned or easily identified from context.

Example

"Twenty applicants were interviewed for the fellowship, and eighteen were accepted into the program."

• Rhymes for eighteen

Word Origin & Etymology

From Old English eahtatīene, a compound of eahta ('eight') and -tīene ('-teen', meaning 'ten more than'), derived from Proto-Germanic *ahtōutehun.

Usage Trend

Historical frequency of usage in published text.

180019102020

Cite this Entry


Wordmom. (2026). Definition of Eighteen. In Wordmom Dictionary. Retrieved Nov 5, 2026, from https://wordmom.com/dictionary/eighteen
Built for writers, students, and competitive word game players, Wordmom combines an uncluttered English dictionary and thesaurus with fast, pattern-based word finders so you can verify definitions, synonyms, and high-scoring tile plays in one place.
Dictionary & Reference
© 2016–2026 Wordmom Network. All rights reserved. Made with for word lovers everywhere.
Disclaimer: SCRABBLE® is a registered trademark. All intellectual property rights in and to the game are owned in the U.S.A. and Canada by Hasbro Inc., and throughout the rest of the world by J.W. Spear & Sons Limited of Maidenhead, Berkshire, England, a subsidiary of Mattel Inc. Mattel and Spear are not affiliated with Hasbro. Words With Friends® is a registered trademark of Zynga Inc. Wordle® is a registered trademark of The New York Times Company. Other referenced game titles and tournament lexicon codes (including NASPA NWL and WESPA/HarperCollins CSW) are trademarks of their respective owners. Wordmom is an independent reference utility for educational and entertainment purposes and is not affiliated with, sponsored by, or endorsed by Hasbro, Mattel, Spear, Zynga, The New York Times Company, NASPA, WESPA, or HarperCollins Publishers. All game names are referenced strictly under nominative fair use to indicate compatibility.