Preposition: into

• dust: Defending such high taxation levels, lest the NHS crumbles into dust, has tested people's patience to the limit.

Object

• cheese: Serve the soup with a little crumbled blue cheese stir in.

• mansion: One evening after dark a young man prowled among these crumbling red mansions, ringing their bells.

• cliff: His right hand held on to a crumbling stone cliff, his left stuck out in mid-air.

Modifying Another Word

• away: Over the past five months they have watched their livelihoods crumble away with the death of every cow, every sheep.

• easily: If the lawn's edges crumble easily, insert an edging of wood or plastic set below grass level.

Followed by an intransitive particle

• away: The braille will now crumble away leaving a hole.

Modifying Another Word

• rapidly: The tarmac rapidly crumbled into a dirt road shadowing the line of the old Central Pacific Railroad.

• soon: Those that had survived the burning torches of the clearances soon crumbled.

Used with why or when

• when: The cookie was sometimes so old it would crumble away when tapped on the table.

Preposition: in

• cube: Heat the Madeira crumble in the stock cube and stir well.

Preposition: under

• pressure: Can you keep your cool and win, or will you crumble under the pressure?

• weight: Were they to progress tho, they would probably crumble under the weight of disciplinary bans.

Preposition: with

• custard: My mother's blackcurrant and apple crumble with custard and her steak and kidney pie.