Verb (1-dan, intransitive)
1. to collapse; to crumble
さらに階段が崩れていく。Furthermore, the stairs continue to crumble.
2. to get out of shape; to lose one's shape; to become disorganized; to become untidy
最初はバランスが崩れちゃってもしょうがない。It can't be helped if the balance gets thrown off at first.
3. to break down; to be thrown into disarray
この辺りから、理性が少し崩れたんだと思う。I think my reason started to break down from around here.
4. to crash (stock market); to slump; to decline
5. to break money into small change
6. to turn bad (e.g. weather); to change for the worse; to deteriorate
午後から天気が崩れるらしい。Apparently the weather will take a turn for the worse in the afternoon.