How to say "thick" in Japanese

• 厚いあついJLPT N5approx.Common
  i-adjectiveThe basic word for the physical thickness of flat or layered things such as boards, ice, walls, or coats, and by extension 'deep' or 'heavy' qualities.
  氷こおりは２インチの厚あつさだ。↗

  The ice is two inches thick.
• 太いふといJLPT N5approx.Common
  i-adjectiveCovers thickness in girth: round or elongated things that are fat or thick, such as ropes, tree trunks, fingers, or lines — girth, not the thickness of a flat surface.
  彼かれは太ふとい首くびをしている。↗

  He has a thick neck.
• 分厚いぶあついCommon
  i-adjectiveThick to a striking degree: use it when something is impressively thick, bulky, or massive, such as a heavy book, a thick slice of bread, or a heavy coat.
  町民ちょうみんは分厚ぶあついステーキを食たべるのが好すきだ。↗

  The townspeople like to eat thick steaks.
• 厚手あつでCommon
  no-adjective, na-adjectiveDescribes thick material — paper, cloth, and the like — as in heavy fabric or thick paper; it characterises the weight of the material itself.
• 濃密のうみつCommon
  na-adjectiveNot physical thickness but density: thick or rich flavour or colour, or deep, densely packed qualities. For literal solid objects it is seldom the word you want.

Use 「厚い」 for the thickness of flat or layered things, 「太い」 for the girth of round or elongated ones, 「分厚い」 for strikingly bulky thickness, 厚手 for thick paper or cloth, and 濃密 for dense richness of flavour or colour.

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

• 厚いあついthick
• 太いふといfat
• 分厚いぶあついthick
• 厚手あつでthick (paper, cloth, etc.)
• 濃密のうみつdense
• 濃厚のうこうrich (flavor, color, etc.)
• どろどろviscous
• 肉厚にくあつthick
• 密みつdense
• 鬱蒼うっそうthick
• 分厚ぶあつthick
• どろりthick (of a liquid)
• 地厚じあつthick (fabric, cloth)
• 厚口あつぐちthick (paper, etc.)
• 切れが悪いきれがわるいthick
• 肉の厚いにくのあついthick (esp. of muscles, wood, leaves, etc.)
• 濃い口こいくちrich (taste)
• べっとりsticky
• ぽってりplump
• もうもうdense (e.g. fog, dust, etc.)
• 特濃とくのうhighly concentrated
• 靉靆あいたいtrailing (clouds)
• 鬱然うつぜんdense (vegetation)
• ぶっといfat
• ごてごてしいover-the-top
• ふさふさin tufts
• 稠密ちゅうみつdense
• 深いふかいdense
• 濃いこいthick (consistency)
• 細やかこまやかdeep (of a colour)
• 濃ゆいこゆいthick (consistency)
• あちさんthick
• もっさりbushy (hair)
• 濃のうconcentrated
• しげいdensely packed