How to say "apex" in Japanese

• 頂点ちょうてんJLPT N2approx.Common
  nounCovers 'apex' as the highest point of something, whether a physical object such as a triangle or mountain, or a figurative height such as a career or sport; the closest general equivalent.
• てっぺんCommon
  nounThe very top of something tall, especially a mountain's summit; usually written in kana alone. Best for a concrete, physical highest point rather than an abstract one.
  私わたしたちは大阪おおさかタワーのてっぺんに上あがった。↗

  We got to the top of Osaka Tower.
• 霊長れいちょうCommon
  nounCovers 'apex' in the sense of 'crown of creation' — humankind as the summit of all living things — or the best of its kind; for other senses it is seldom the word you want.
  人間にんげんは万物ばんぶつの霊長れいちょうである。↗

  Man is the lord of all creation.
• 先端せんたんJLPT N2approx.Common
  nounCovers 'apex' as a pointed extremity: the tip of a leaf, the cusp of a crescent moon, the sharp end of a curve. It is about being pointed or foremost, not highest.
  ヨーロッパとアフリカの西にし海岸かいがんをとおりすぎ、アフリカ南部なんぶの先端せんたんまでとびます。↗

  Past the west coasts of Europe and Africa to the tip of southern Africa.
• 最高潮さいこうちょうCommon
  nounThe figurative apex: the point at which excitement, emotion, or activity is at its most intense — the sense also covered by 'climax' and 'zenith'. Think of a celebration or performance at its height.
  試合しあいは最高潮さいこうちょうに達たっした。↗

  The game came to a climax.

Choose 頂点 for the highest point of anything, literal or figurative; 「てっぺん」 for the concrete top of something tall; 先端 for a pointed tip or a curve's apex; 最高潮 for a figurative climax; 霊長 only for 'crown of creation'.

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

• 頂点ちょうてんvertex
• てっぺんtop
• 霊長れいちょうcrown (of creation)
• 先端せんたんpointed end
• 最高潮さいこうちょうclimax
• 尖部せんぶapex
• 向点こうてんapex
• 舌尖音ぜっせんおんapical consonant