うそだ isn't really a serious accusation. How would you say 'you're lying' more
seriously?
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2015-05-21T21:19:44.293
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2015-06-01T11:56:09.617
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words
How to accuse someone of lying
The answer @Unknown gave is perfect if you want more weight and directness to
the accusation

> Hmm.... 「うそつけっ！」, maybe? or 「うそつき！」とか・・ – Unknown May 21 at 22:04
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2015-05-29T21:32:54.260
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2015-05-29T22:00:35.413
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It seems to me that うそだ is already strong enough, when said in normal tone (or
more serious, of course), because we don't usually use in that way. Another
possible strong expression would be

> それはない。 (That can't be true.)

Perhaps you should compare with more casual accusing expressions such as
う(っ)そだ〜 うそでしょ？
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2015-06-01T11:56:09.617
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