How to say "defiance" in Japanese

• 挑戦ちょうせんJLPT N1approx.Common
  noun, suru verb, intransitive verbCovers defiance in the sense of a challenge or dare — defying someone by openly challenging them. Its core meaning is 'challenge', so it fits defiant acts framed as challenges more than resistance to authority.
  スカイダイビングに挑戦ちょうせんしたいんです。↗

  I'd like to try out skydiving.
• 反抗はんこうJLPT N3approx.Common
  noun, suru verb, intransitive verbCovers defiance as open resistance or insubordination — defying authority or control. This is the natural choice when 'defiance' means rebellious opposition rather than a challenge or dare.
  彼かれらは王様おうさまの作つくった法律ほうりつに反抗はんこうした。↗

  They defied the laws of the king.

Use 反抗 for defiance as resistance or insubordination against authority, and 挑戦 when defiance takes the form of an open challenge or dare directed at someone.

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

• 挑戦ちょうせんchallenge
• 反抗はんこうopposition