How to say "hyper" in Japanese

• ハイパーCommon
  prenominal modifierCovers 'hyper' in its most familiar sense: overexcited, wired, bursting with energy. A borrowing from English, it is the common, natural choice for someone who cannot sit still or a giddy, high-spirited atmosphere.
• 度を越したどをこした
  expressionMatches 'hyper' only in the sense 'excessive, over the top' — behavior that goes beyond proper limits. Really meaning 'extravagant; extreme' and less common, it is seldom the word for an energetic, wired person.
  がまんするのが難むずかしいのは彼かれの度どを超こした丁重ていちょうさである。↗

  What is hard to put up with is his over-politeness.

Choose 「ハイパー」 for the familiar sense of 'hyper' — overexcited, wired, bursting with energy — and 「度を越した」 only when 'hyper' means excessive or over the top, describing behavior that goes beyond acceptable limits.

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

• ハイパーhyper
• 度を越したどをこしたextravagant