language barrier
US /ˈlæŋ.ɡwɪdʒ ˌber.i.ər/
UK /ˈlæŋ.ɡwɪdʒ ˌber.i.ər/
1.
a difficulty in communication between people who do not speak the same language
:
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The language barrier made it hard for them to understand each other.
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Overcoming the language barrier is crucial for international business.