Law of Conservation of Ninjutsu

proper noun

The ability of one or few people to win fights against many opponents.

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Meanings

proper nounthe Law of Conservation of Ninjutsu
  1. humorousinformalfictionThe ability of one or few people to win fights against many opponents.

    The Law of Conservation of Ninjutsu was working in the main characters' favor, but even so, it was hard going.

    2011 February 19, Andrew Perron <pwerdna@gmail.com>, “LNH/RACCies: Just Imagine Saxon Brenton vs. Andrew Perron in the Return of the RACCies! #10: Poledancing Phantoms of Limbo”, in rec.arts.comics.creative (Usenet), message-ID <1hmvlegtnnkih$.1p14289mto1ro.dlg@40tude.net>
    2 more examples

    > The more creativity and ingenuity you give your aliens, the less is > available for your humans, generally the protagonists, which means > things will end poorly for Our Heroes. [...] Sort of like a SCIENCE application of the Law of Conservation of Ninjutsu?

    2007 December 3, sw <sw@eyrie.org>, “Re: Why so few creative aliens?”, in rec.arts.sf.written (Usenet), message-ID <slrnfl8dbu.6gg.sw@haven.eyrie.org>

    In other words, if I can tweak the minion->normal->elite->solo system into a^([sic]) in-game representation of the Law of Conservation of Ninjutsu, there will be much win.

    2008 May 19, Nockermensch <ralgomes@gmail.com>, “Re: Ampersand: The Scoop on D&D Insider”, in rec.games.frp.dnd (Usenet), message-ID <11398510-50ce-4342-a223-ca68b86c8b89@25g2000hsx.googlegroups.com>

Origin

law (“rule”) + of + conservation (“preservation”) + of + ninjutsu (“a martial art used by ninjas”) The law implies that each team of ninjas has the same finite amount of "power" of martial arts, therefore a team with fewer ninjas has more powerful ninjas.

Full word history & related roots →
Cite this entry
APA

Law of Conservation of Ninjutsu. (n.d.). In WatkinsX Dictionary. Retrieved November 5, 2026, from https://dictionary.watkinsx.com/word/Law%20of%20Conservation%20of%20Ninjutsu

MLA

“Law of Conservation of Ninjutsu.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/Law%20of%20Conservation%20of%20Ninjutsu. Accessed November 5, 2026.

Chicago

WatkinsX Dictionary, s.v. “Law of Conservation of Ninjutsu,” accessed November 5, 2026, https://dictionary.watkinsx.com/word/Law%20of%20Conservation%20of%20Ninjutsu.

Source: Law of Conservation of Ninjutsu on Wiktionary, CC BY-SA 4.0.