How to say "influence" in Japanese

Choosing the right word
  • 影響えいきょうJLPT N3approx.Common
    noun, suru verb, intransitive verbThe general word for influence as an effect something has on a person, thing, or situation; when you mean 'influence' or 'impact' in this neutral sense, this is the word.
    多おおくのテレビ番組ばんぐみが子供こどもたちに悪わるい影響えいきょうを与あたえている。↗
    Many TV programs have a bad influence on children.
  • 権力けんりょくJLPT N1approx.Common
    no-adjectiveInfluence in the sense of power or authority to control others, especially political power; choose this when 'influence' means clout or command over people, not a mere effect.
    王おうは権力けんりょくを奪うばわれた。↗
    The king was shorn of his power.
  • 勢力せいりょくJLPT N1approx.Common
    nounInfluence as the strength or might a group or faction holds — its sway or reach; it is about the power a side commands, not one person's effect on another.
    Among the people of the colonies suffering under Earth's tyranny a force emerges intending to overthrow the status quo through terrorism.
  • 権威けんいJLPT N1approx.Common
    nounInfluence that comes from authority or prestige — the weight someone's word carries because of their standing; it points to respected authority rather than raw power or effect.
    学生がくせいたちは権威けんいに反抗はんこうした。↗
    The students revolted against authority.
  • 波及はきゅうCommon
    noun, suru verb, intransitive verbInfluence viewed as something that spreads outward like ripples, with aftereffects; it names the spreading itself, so it is narrower than 影響 and not the all-purpose choice for 'influence'.

Use 影響 for influence as an effect on someone or something; 権力, 勢力, and 権威 for influence as power, clout, or authority; and 波及 for influence that spreads outward with aftereffects.

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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