How to say "shear" in Japanese

• 刈るかるJLPT N3approx.Common
  godan verb, transitive verbCovers the verb sense: to cut something off by clipping — hair, grass, and the like. The common everyday choice when 'shear' means cutting with scissors, clippers, or a mower.
  彼かれらはジャックの髪かみの刈かり方かたをひやかした。↗

  They made fun of Jack's haircut.
• シア
  nounThe katakana term for shear as a technical noun, especially wind shear in aviation and meteorology; it names the phenomenon, not the act of cutting.
• シヤー
  nounA direct katakana rendering of the English word. Less common, and seldom the word you want; for wind shear and comparable technical senses, シア is the katakana term to use.
• せん断せんだん
  noun, suru verb, transitive verbThe technical term for shear as a force or stress — a material deformed by one part sliding across another. This is the 'shear' of engineering and physics, not the everyday cutting of hair or grass.
• ずり
  nounA specialist term for shear in wind or fluid flow. Less common and marginal for everyday purposes; for wind shear, シア is the word to use instead.

Use 「刈る」 for the cutting sense — hair, grass — and for the technical noun choose 「シア」 for wind shear, 「せん断」 for a shearing force in engineering, 「ずり」 for shear in wind or fluids; 「シヤー」 is a marginal transcription.

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

• 刈るかるto cut (grass, hair, etc.)
• シアshear (e.g. wind shear)
• シヤーshear
• せん断せんだんshear
• ずりshear (wind, fluids)
• 刈かりcut
• ずれshear (e.g. shear stress)