break down

verb
RareNot in standard dictionaries
1

To stop functioning.

2

To unexpectedly collapse, physically or in structure.

3

To intentionally demolish; to pull down.

4

To fail, especially socially or for political reasons.

5

To give in or give up: relent, concede, surrender.

6

To render or to become unstable due to stress, to collapse physically or mentally.

7

To render or to become weak and ineffective.

8

To (cause to) decay, to decompose.

9

To separate into a number of parts.

10

To divide into parts to give more details, to provide a more indepth analysis of.

#informal