How to say "forceful" in Japanese

• 力強いちからづよいJLPT N2approx.Common
  i-adjectiveCovers forceful in the sense of powerful and vigorous: a forceful speech, performance, or argument delivered with strength and conviction. It is usually the word you want for this meaning.
  踊り子おどりこ達たちは白しろいドレスを着きてきゃしゃに見みえますが、実際じっさいには彼女かのじょたちは馬うまのように力強ちからづよいのです。↗

  The dancers look delicate in their white dresses, but they are really as strong as horses.
• きついJLPT N3approx.Common
  i-adjectiveCovers forceful describing a person's manner or demands: forceful in the sense of intense, strong-minded, and hard to push back against. The nuance can shade toward severe or overbearing.
• 盛大せいだいJLPT N1approx.Common
  na-adjective, nounMarginal for forceful: it really describes grand, large-scale occasions such as a lavish welcome or celebration, so it is seldom the word you want for forceful people, speech, or arguments.
  盛大せいだいな溜息ためいきをつきながら、テーブルの上うえにどさどさとパンを置おき、椅子いすにどっかりと腰掛こしかける。↗

  Heaving a great sigh I plunk my bread on the table and flump onto the chair.

Use 「力強い」 for forceful meaning powerful and vigorous, 「きつい」 for a forceful manner or demands that feel intense or overbearing, and 盛大 only for grand, large-scale occasions, not forceful people or arguments.

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

• 力強いちからづよいpowerful
• 強行的きょうこうてきforceful
• きついdetermined
• 盛大せいだいforceful