Hard water is fit for dyeing clothes.

Explanation

**Step-by-Step Solution:**

1. **Definition of Hard Water**: Hard water is water that contains a high concentration of dissolved minerals, primarily calcium and magnesium salts.

2. **Characteristics of Hard Water**: The presence of these minerals gives hard water its "hard" quality. It does not lather easily with soap, which is a common characteristic of hard water.

3. **Dyeing Process**: When dyeing clothes, the dye needs to adhere well to the fabric. The presence of calcium and magnesium ions in hard water can actually help in the dyeing process.

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