How to say "mold" in Japanese

Choosing the right word
  • カビCommon
    nounCovers the living-organism sense: the fuzzy fungus that grows on food, walls, and damp corners; 'mildew' falls under it too. Usually written in kana alone.
    Mold grew on the boots.
  • 鋳型いがたCommon
    nounSpecifically a casting mold: the hollow form into which molten metal is poured to harden. It also covers 'template', a pattern for reproducing the same shape.
    人間にんげんは鋳型いがたに入いれて作つくるわけにはいかない。↗
    A man cannot be made in a mold.
  • 型枠かたわくCommon
    nounThe construction term: formwork or shuttering, the temporary frame that holds wet concrete in place while it sets. For molds outside building work, this is not the word you want.
  • 形作るかたちづくるCommon
    godan verb, transitive verbThe verb: to mold, form, or shape something, giving it its form or character. Choose this when English 'mold' is an action, not the object itself.
    彼かれは粘土ねんどで像ぞうを形作かたちづくった。↗
    He shaped the statue from clay.
  • 型かたJLPT N3approx.Common
    nounThe broad noun for a mold as a shaped form, and for a model or pattern. When 'mold' means the shape-giving form itself, rather than fungus or casting, this is the general choice.
    その像ぞうは型かたに入いれられて作つくられた。↗
    The statue was cast in a mold.

Use 「カビ」 for the fungus, 鋳型 for a casting mold, 型枠 for concrete formwork, 型 for a mold or pattern in general, and 「形作る」 when 'mold' is the verb 'to shape'.

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

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

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