How to say "fluff" in Japanese

• 綿毛わたげ
  nounSoft, light natural fluff — the down of birds or the fuzzy seeds of plants such as dandelions. Use it for fine fluff drifting in the air, not for lint from clothes.
• 毛羽けば
  nounA textiles word for the fuzz or nap on the surface of cloth: fine fibers standing up from the weave rather than loose clumps of fluff. Think of a fuzzy sweater or blanket.
• 綿ぼこりわたぼこり
  nounFluff as clumps of fabric fibers: the soft balls of lint that gather under beds and in corners. This is the dust-bunny kind of fluff, not hair or bird down.
• 糸くずいとくず
  nounWaste thread and lint: the thread scraps left after sewing, or the fluff that collects in pockets and dryer filters. Reach for it when the fluff is literally bits of thread.
• 産毛うぶげ
  nounDowny hair on the skin — a baby's fine hair or the peach fuzz on a cheek. It counts as 'fluff' only in this sense; for fabric, lint or dust it is not the word.
  孵化ふか後ごまもないヒナは、産毛うぶげが濡ぬれていますが、２時間じかんもすると乾かわいてフワフワになります。↗

  The down of chicks that have just hatched is damp, but after two hours it dries out and becomes fluffy.

All five are less common equivalents of 'fluff': choose 綿毛 for soft natural down and fuzz, 毛羽 for fuzz on fabric surfaces, 「綿ぼこり」 for clumps of fiber fluff, 「糸くず」 for thread lint, and 産毛 for fine downy body hair.

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

• 綿毛わたげdown
• 毛羽けばfluff
• 綿ぼこりわたぼこりfluff (clump of fabric fibres)
• 糸くずいとくずwaste thread
• 産毛うぶげdowny hair
• むく毛むくげdowny hair