Definition
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dyfalu
Mae 'dyfalu' yn golygu gwneud dybiaeth neu farn am rywbeth heb gael y wybodaeth llwyr.
The word 'dyfalu' means to make a guess or assumption about something without having complete information.
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Roedd hi'n rhaid iddo ddifalu pa un o'r ddelweddau oedd y cywir.
He had to guess which of the images was correct.
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Dyfalu yw'r ffordd orau o ddechrau pan nad oes gennyf unrhyw wybodaeth.
Guessing is the best way to start when I have no information.
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Cefais fy ngwahodd i chwarae gêm lle roedd yn rhaid i ni ddyfalu'r atebion.
I was invited to play a game where we had to guess the answers.