影響力|えいきょうりょくeikyouryoku

1. nouninfluence; clout; leverage
   彼かれの意見いけんには強つよい影響力えいきょうりょくがある。↗

   His ideas carry a lot of weight.

• 1.
  Synonym権威けんいNeutralRecognized authority or prestige, as in 「その道の権威」; stresses expert standing in a field.
• 2.
  Synonym威力いりょくNeutralThe real force or potency something has, as in 「爆弾の威力」; it stresses how great that force is rather than the ability to sway others.
• 3.
  SynonymインフルエンスNeutralLoanword for influence; rarely used on its own, mostly seen in 「インフルエンサー」. In everyday speech, say 「影響力」.
• 4.
  Related権勢けんせいWrittenHolding power and wielding sway, as in 「権勢を振るう」; leans written/formal. 「影響力」 does not necessarily come from political power.
• 5.
  Related威光いこうWrittenMajesty that naturally inspires awe and obedience; also in 「親の威光」, basking in a parent's authority. 「影響力」 carries no sense of awe.
• 6.
  RelatedインパクトNeutralStrong impact or impression, also a powerful effect on society, as in 「インパクトがある」; 「影響力」 stresses the ability to exert influence.
• 7.
  Related影響えいきょうNeutralThe influence or effect itself, as in 「影響を受ける」; 「影響力」 is the capacity to exert influence.
• 8.
  Related勢威せいいWrittenWritten word for power and prestige; rare, stressing the imposing presence that comes from one's position. In everyday speech say 「影響力」.
• 9.
  Antonym無力むりょくNeutralPowerlessness or helplessness; the opposite of 「影響力」, the power to sway others.

Use 「影響力」 for the power to affect people or society, as in 「影響力のある人物」. For political power and sway pick 「権勢」, for impact or strong impression 「インパクト」, for expert authority 「権威」. 「影響」 is the effect itself, 「威力」 the sheer strength of a force, 「無力」 the opposite; 「勢威」 and 「威光」 are formal written words.

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

1. ある物ものに作用さようし、変化へんかを起おこさせる力ちから。