Linguatard

One who only speaks their native tongue and is unwilling or incapable of learning another language. An England football supporter shouting his beer order in english at a French waiter in France is a perfect example of a Linguatard.

Daniel: Bonjour Paul, ça va bien?
Paul: What the hell are you on about? You garlic muncher!
Daniel: Oh Paul, you are super awesome chap, but you are a bit of a Linguatard.
Paul: Whatever, you can keep your French crap, I'm of for a good honest English baguette.