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ninja

(figurative) A person considered similarly skillful to the historical ninja, especially in covert or stealthy operation.

ˈnɪnd͡ʒəDocumented since 1980s1980sGen XhistoricalCurrent162 viewsLast reviewed Jun 29, 2026+ Add a definition
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12 citations · last seen May 2026

Etymology timeline

Born ~1980 · 1 year of recorded use
1980Born2026: 12 citationsToday, 2026

Seen in the wild

Definitions

US
#1·Apr 26, 2026US

(figurative) A person considered similarly skillful to the historical ninja, especially in covert or stealthy operation.

Heard in the wild
  • “Follow Steve Jobs and develop a vision-focused innovation strategy using a empowering ninja grade technique”

    — Bluesky· May 2026
  • “Happy birthday to funnyman Will Arnett, who played as news cameraman Vern "The Falcon" Fenwick in 'Teenage Mutant Ninja Turtles' (2014) and 'Teenage Mutant Ninja Turtles: Out of the Shadows' (2016). #TMNT #cameraman #filmsky”

    — Bluesky· May 2026
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US
#2·Apr 26, 2026US

(figurative) A person considered to look like the historical ninja in some way, including (historical, _, slang) an amateur private miner in Mongolia.

Heard in the wild
  • “Water based recipe: https://thetastytravelers.com/ninja-creami-chocolate-sorbet-low-calorie/”

    — Bluesky· May 2026
  • “Hasbro GI*JOE Who was your favorite? A Cobra Enemy, a Commando, a Ninja, a Saboteur, a Trooper, a Heavy Machine Gunner, or a Master of Disguise? Mine was a man of few words, a man of mystery. #GIJOE #VintageToys #VintageToyTuesday”

    — Bluesky· May 2026
  • “YES - 2028 I think. I have hopes for maybe a touch of blue in the costume, even. I'll even hold out hopes for a yellow utility belt. It'd be nice to take Bats out of the near ninja motif he's been stuck in cinematically since ADK.”

    — Bluesky· May 2026
  • “🎬 Vídeo Reseña | Teenage Mutant Ninja Turtles: Las aventuras animadas vol. 3 🔥 Estreno 7 de Mayo”

    — Bluesky· May 2026
  • “I BEAT NINJA GAIDEN harder than dark souls and possibly elden ring i believe am i cool now guys”

    — r/teenagers· May 2026
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US
#3·Apr 26, 2026US

(martial arts) A person trained in ninjutsu, especially (historical) one used for espionage, assassination, and other tasks requiring stealth during Japan's shogunate period.

He used to work in the Japanese agency as a ninja.
Origin: A romanized borrowing of , popularized within Japanese by manga after World War II and in English by Eric Van Lustbader's 1980 novel The Ninja and the 1981 movie Enter the Ninja, of uncertain derivation but with an underlying sense of secret or hidden person. The “Mongolian miner” sense arose from the supposed resemblance of the bowls used to wash ore with mercury to the shells of the Teenage Mutant Ninja Turtles. The Juggalo slang sense arose via influence from AAVE nigga. Origin information sourced from Wiktionary contributors (CC BY-SA 4.0).
For parents

Ninja means: A person trained in ninjutsu, especially (historical) one used for espionage, assassination, and other tasks requiring stealth during Japan's shogunate period.. The word is mostly archaic or historical; you will only encounter it in old texts, period drama, or school history rather than current teen conversation. There is no real cause for parental concern; it is descriptive vocabulary rather than risky behaviour.

For ESL learners

ninja means: A person trained in ninjutsu, especially (historical) one used for espionage, assassination, and other tasks requiring stealth during Japan's shogunate period.. Register: neutral, standard English. A common learner mistake is using the word in a register it does not fit, or assuming a single global meaning; native speakers immediately notice when slang appears in formal contexts, so always check the surrounding register before producing it yourself.

Heard in the wild
  • “There’s a guide to spatchcocking in CTT! I smoked a chicken in my Ninja Outdoor Woodfire Oven, it has an electric wood pellet smoker. You’d need a smoker of some kind.”

    — Bluesky· May 2026
  • “Ninja Sentai Kakuranger Act 3 - Middle-Aged Struggles i mean yeah it has that annoying "young kids shouldn't underestimate us old folks" shtick, but it does its job of being the 30 year anniversary special well enough 6/10”

    — Bluesky· May 2026
  • “#NowPlaying: Ninja Tracks - "Clockwork" (feat. Tina Guo) www.youtube.com/watch?v=xBFg...”

    — Bluesky· May 2026
  • “¡NUEVAS HISTORIAS INSPIRADAS EN LA SERIE DE ANIMACIÓN CLÁSICA! Teenage Mutant Ninja Turtles: Las aventuras animadas vol. 3 7 de Mayo estreno”

    — Bluesky· May 2026
  • “80 [vg] Naruto: Ninja Council 2 (GBA, 2006) Less frustrating than dealing with the first one in some ways, still an annoying little experience. I had this one as a kid and always wished I could play the vs mode. Never did. Sad.”

    — Bluesky· May 2026
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