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# dominantLanguage

Returns the dominant language of the string set for the linguistic tagger.

```
var dominantLanguage: String? { get }
```

## Return Value

The BCP-47 tag identifying the dominant language of the string, or the tag “und” if a specific language cannot be determined.

## Discussion

If you want to know the dominant language of a string that you’re analyzing with a linguistic tagger (for example, identifying part of speech for each word), specify the [`language`](/documentation/Foundation/NSLinguisticTagScheme/language) tag scheme in the initializer. After you set the [`string`](/documentation/Foundation/NSLinguisticTagger/string) property of the linguistic tagger, the dominant language can be determined with the [`dominantLanguage`](/documentation/Foundation/NSLinguisticTagger/dominantLanguage) property, as shown in this example:

```swift
let text = "Die Kleinen haben friedlich zusammen gespielt."
let tagger = NSLinguisticTagger(tagSchemes: [.language], options: 0)
tagger.string = text
tagger.dominantLanguage // "de"
```

In the example, the BCP-47 language tag “de” is returned as the dominant language, indicating that the text is in German.

---

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