How to say "ash" in Japanese

Choosing the right word
  • 灰はいJLPT N3approx.Common
    nounThe default word for ash and ashes, whether from a cigarette, a fire, or a cremation. Use this in everyday contexts; other choices here are for specialized or restricted senses.
    すべては燃もえて灰はいとなった。↗
    Everything was burnt to ashes.
  • nounA loanword spelled in katakana, covering the same basic sense of ash. It is less common than 灰 and you will seldom need it; write or say 灰 instead.
  • 灰燼かいじん
    nounA literary word for ash and embers, also used figuratively for complete destruction, as in something reduced to ashes. Suits written, elevated prose rather than everyday talk.
  • 灰分かいぶん
    nounThe technical term for the ash content of a substance, as measured in analysis of food, fuel, or other materials. Use it only in this scientific sense, not for literal ashes.
  • 焼却灰しょうきゃくばい
    nounSpecifically ash produced by incineration, such as from garbage burning or an incinerator plant. It is not a general word for ash; use 灰 when the source is not incineration.

Use 灰 for ordinary ash or ashes; 灰分 for ash content in scientific analysis; 焼却灰 for ash from incineration; 灰燼 for embers or figurative destruction; 「アッシュ」 is a rare loanword.

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

Japanese equivalents

JLPT vocabulary levels are community estimates, not official (no official lists have been published since the 2010 revision).

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