Search Dictionary
Definition of ninja

ninja

/ˈnɪn.dʒə/
nin · ja
Plural:ninjas
JUMP TO:

ninja Lexical Profile

ninja Game Scores & Validity

• noun

1

A member of a feudal Japanese society of mercenary agents, highly trained in martial arts and stealth (ninjutsu), who were hired for covert purposes such as espionage and sabotage.

Example

"Historical exhibits at the museum in Iga explain how a traditional ninja relied on disguise and intelligence gathering."

2

A person who excels at a particular skill, activity, or profession, or who moves with remarkable stealth and agility (informal).

Example

"She is a spreadsheet ninja who can automate our entire monthly financial report in minutes."

Synonyms
View all synonyms for ninja
Antonyms
View all antonyms for ninja

• Nearby Words

ninety
ninetyfold
ningbo
ninja
ninjutsu
ninny
ninth

Word Origin & Etymology

Borrowed in the mid-20th century from Japanese ninja (忍者), the Sino-Japanese reading of the characters for shinobi-no-mono, literally meaning 'a person who endures or moves with stealth.'

Cite this Entry

Wordmom. (2026). Definition of Ninja. In Wordmom Dictionary. Retrieved Nov 5, 2026, from https://wordmom.com/dictionary/ninja
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.
Word Games & Solvers
Word FinderScrabble Word FinderWords With Friends CheatWordle SolverAnagram Solver
Dictionary & Reference
DictionarySynonymsAntonymsWords
Community
Contact UsEditorial PolicyPrivacy PolicyTerms and Conditions
© 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.