# `reverse`


_Reverse the order of items of a list or dictionary_
```syntax
reverse x    reverse[x]
```

Returns the items of `x` in reverse order.
```q
q)reverse 1 2 3 4
4 3 2 1
```

On atoms, returns the atom; on dictionaries, reverses the keys; and on tables, reverses the columns.
```q
q)d:`a`b!(1 2 3;"xyz")
q)reverse d
b| x y z
a| 1 2 3
q)reverse each d
a| 3 2 1
b| z y x
q)reverse flip d
a b
---
3 z
2 y
1 x
```

----
 
[`rotate`](rotate.md)