How to say "cave-in" in Japanese

• 陥落かんらくCommon
  noun, suru verb, intransitive verbCollapse or subsidence, but most characteristically the fall of a stronghold, city, or position. For a literal cave-in of the ground, it is seldom the word you want.
• 崩落ほうらくCommon
  noun, suru verb, intransitive verbA collapse in which material breaks apart and crashes down, as when a cliff face or slope gives way. It suggests a violent collapse rather than gentle subsidence.
• 陥没かんぼつCommon
  noun, suru verb, intransitive verbSinking inward that leaves a hollow or depression. It is the usual word for ground caving in, and also describes a depressed area in a bone such as the skull.
• 落盤らくばんCommon
  noun, suru verb, intransitive verbA cave-in in a mine or tunnel, especially the roof giving way; also a rockfall. Not the word for ground subsidence or the collapse of a building.

Use 陥没 for ground sinking into a hollow, 崩落 for material crashing down, 落盤 for mine or tunnel cave-ins, and 陥落 chiefly for the fall of a stronghold, city, or position.

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

• 陥落かんらくsubsidence
• 崩落ほうらくcollapse
• 陥没かんぼつcave-in
• 落盤らくばんcave-in (in a mine or tunnel)