Translation

拒絶する / 否認する / 放棄する

Meaning

Repudiate means to formally reject, deny, or refuse to accept a claim, belief, agreement, responsibility, or connection. It is stronger and more official than simply dislike. The trap is using it for ordinary polite refusal.

Examples

• その候補者は過去の発言を正式に否定しました。
  The candidate repudiated his earlier remarks.
• 会社はその不正行為への責任を否認しました。
  The company repudiated responsibility for the misconduct.