Definition
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mewn gwirionedd
Mae 'mewn gwirionedd' yn golygu 'yn y ffaith' neu 'mewn gwirionedd'.
'Mewn gwirionedd' means 'in fact' or 'actually.'
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Mewn gwirionedd, mae hi'n byw ym Mhorthmadog.
In fact, she lives in Porthmadog.
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Mewn gwirionedd, mae'r tywydd yn well nag y disgwylwyd.
In fact, the weather is better than expected.
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Mewn gwirionedd, roedd y ffilm yn fwy diddorol nag y meddyliais.
In fact, the film was more interesting than I thought.