How to say "self-defence" in Japanese

Choosing the right word
  • 自衛じえいJLPT N2approx.Common
    suru verb, transitive verb, intransitive verb, no-adjectiveThe general word for self-defence as the act of defending oneself against attack; it also has figurative uses for protecting one's own interests, so it covers both physical and non-physical senses.
  • 護身ごしんCommon
    nounSelf-defence as self-protection: guarding one's own body and personal safety from harm. It is the word most at home in martial-arts and personal-safety contexts, often with reference to protective techniques.

Both translate 'self-defence', but 自衛 is the general term for defending oneself against attack, literal or figurative, while 護身 stresses self-protection—guarding one's own body and safety—and is especially at home in martial-arts and personal-safety contexts.

Usage comparisons are AI-assisted and cross-checked by multiple models; for study reference only

Japanese equivalents

JLPT vocabulary levels are community estimates, not official (no official lists have been published since the 2010 revision).

Say it right, write it right

Core lookup works fully offline, with cloud pronunciation and one-tap save & review. Free, no sign-up.

Free downloadWindowsFree downloadmacOSDownload on the App StoreGet it on Google Play
MobileiOS / Android

Android

QR code for the Google Play pageGet it on Google Play

Scan it with your Android phone to install, or search for “Tomoshi” on Google Play.

iOS

QR code for the App Store pageDownload on the App Store

Scan it with your iPhone camera to install, or search for “Tomoshi” in the App Store.

Install the browser extensionLook words up on any web page · Chrome / Edge / Safari

Screenshot of a Tomoshi lookup resultScreenshot of Tomoshi lookup results on a phone

Windows macOS Chrome / Edge / Safari extension iOS / Android