How to say "dependence" in Japanese

Choosing the right word
  • 依存いぞんJLPT N1approx.Common
    noun, suru verb, transitive verb, intransitive verbThe default word for dependence or reliance on a person, thing, or substance, often with a negative nuance of over-reliance. Use it for drug, alcohol, or economic dependence in general statements.
    それはすべて天候てんこうに依存いぞんしている。↗
    It all depends on the weather.
  • 頼りたよりCommon
    nounReliance or dependence viewed from the side of the person or thing one leans on; it suggests someone or something serving as a support. It is the natural choice when speaking of having something to rely on.
    私は何なんも頼たよりにするものがない。↗
    I have nothing to fall back on.
  • 依拠いきょCommon
    noun, suru verb, intransitive verbDependence in the sense of basing oneself on something, such as relying on a source, precedent, or theory as a foundation. It is a formal, written-style word rather than one for everyday talk of depending on someone.
    It's ludicrous to continue business operations while selling off bit by bit the land on which your business depends.
  • 依存症いぞんしょうCommon
    nounSpecifically dependence on alcohol, drugs, and similar substances, in the medical or addictive sense. When 'dependence' means addiction, this is the word to reach for rather than plain 依存.
    彼女かのじょの夫おっとはひどい麻薬まやく依存症いぞんしょうだ。↗
    Her husband is heavily dependent on drugs.
  • 依頼いらいJLPT N3approx.Common
    noun, suru verb, intransitive verbAlthough its glosses include dependence and reliance, this word is really about request or commission — asking someone to do something. It is seldom the word you want for 'dependence'; beware of confusing it with 依存.

For general dependence or reliance use 依存 or 「頼り」; 依拠 covers depending on something as a basis; 依存症 is specifically addiction-type dependence; 依頼 is really 'request', seldom the word you want.

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

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

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