sudden
the sudden collapse of the bridge

be in danger of collapse

sudden
mental, nervous, physical

be close to, be on the point of, be on the verge of
She was on the verge of nervous collapse.

a state of collapse
He was in a state of mental and physical collapse.

complete, total
general
virtual
sudden
economic, financial
the sudden economic collapse of 2001

bring about, cause, contribute to, lead to, result in, trigger
The war has led to the collapse of agriculture in the area.

be faced with, face
be on the brink of, be on the point of, be on the verge of
avoid, prevent
predict
watch, witness

collapse into
a collapse into anarchy

completely

into
Several buildings have collapsed into the ocean.

under
The roof collapsed under the weight of snow.

suddenly
immediately
almost, nearly

against
The man collapsed against the wall and slid down it.

from
She collapsed suddenly from a heart attack.

with
She collapsed with shock.

collapse in a heap
He collapsed in a heap on the floor.

eventually, finally
In November the strike finally collapsed.

quickly, rapidly
suddenly
almost, nearly, virtually

to collapse in the face of sth
The theory collapsed in the face of the evidence.

Collapse is used with these nouns as the subject:
bank, building, business, case, cave, ceiling, civilization, coalition, economy, empire, firm, house, lung, market, negotiation, price, regime, resistance, roof, scheme, system, talk, tent, tower, trial, truce, wall, world

Collapse is used with these nouns as the object:
distinction, pushchair