耐水(たいすい)

たいすい
noun, no-adjective
water resistance; waterproof
abstract
1. water resistance; waterproof; water-resistant
The property of resisting water penetration or damage from water. Used as a noun or as a modifier (耐水の, 耐水性) to describe materials, products, and coatings that withstand water.
耐水(たいすい)性(せい)のある素材(そざい)。
A water-resistant material.
この時計(とけい)は耐水(たいすい)仕様(しよう)だ。
This watch has a waterproof specification.
耐水(たいすい)ペーパーで仕上(しあ)げを磨(みが)くと、表面(ひょうめん)がなめらかになる。
Polishing the finish with waterproof sandpaper makes the surface smooth.

Composed of 耐(たい) (resistant, enduring) + 水(すい) (water). Part of the productive 耐(たい)〜 pattern for describing resistance to various conditions.

Usage

耐水(たいすい) is commonly used as a compound modifier: 耐水(たいすい)性(せい) (water resistance as a property), 耐水(たいすい)加工(かこう) (waterproof treatment), 耐水(たいすい)ペーパー (waterproof sandpaper). It is distinct from 防水(ぼうすい) (waterproof) in that 耐水(たいすい) emphasizes resistance or durability against water, while 防水(ぼうすい) emphasizes preventing water from entering.

Common collocations

  • 耐水(たいすい)性(せい): water resistance (as a property)
  • 耐水(たいすい)加工(かこう): waterproofing treatment
  • 耐水(たいすい)ペーパー: waterproof sandpaper (wet-dry sandpaper)
  • 耐水(たいすい)圧(あつ): water pressure resistance rating
  • 耐水(たいすい)塗料(とりょう): water-resistant paint

Similar words

Related Words

Compare: 防水(ぼうすい) (waterproof)
Compare: 撥水(はっすい) (water-repellent)
Compare: 耐熱(たいねつ) (heat-resistant)
Compare: 耐久(たいきゅう) (durable)
general
Added 2026.4.18 19:30 · Revised 2026.9.2 13:02
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