---
id: fast-foundation.checkbox.indeterminate
title: Checkbox.indeterminate property
hide_title: true
---
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[@microsoft/fast-foundation](./fast-foundation.md) &gt; [Checkbox](./fast-foundation.checkbox.md) &gt; [indeterminate](./fast-foundation.checkbox.indeterminate.md)

## Checkbox.indeterminate property

The indeterminate state of the control

<b>Signature:</b>

```typescript
indeterminate: boolean;
```