Translation guide
A phrase used to add a further point, often one that is more important or surprising, in spoken or written English. In Japanese, this is expressed through conjunctions and sentence patterns that add information, with the choice depending on formality and whether the added point is simply additional or emphatically stronger.
To introduce a further point that reinforces or exceeds the previous one, often implying 'and even more importantly'.
A common and versatile conjunction meaning 'on top of that' or 'in addition', used to add a point that is often more significant. Suitable for both spoken and written Japanese.
He is kind. What's more, he is smart.
This restaurant is delicious. What's more, it's cheap.
A casual, spoken expression meaning 'to make matters worse' or 'on top of that', often used when adding a negative or surprising point. It carries a nuance of 'as if that wasn't enough'.
It started raining. What's more, the wind is strong.
A conjunction meaning 'moreover' or 'and what's more', used to add information that is surprising or emphatic. Common in both speech and writing.
He can speak Japanese. What's more, his keigo is perfect.
A formal conjunction meaning 'furthermore' or 'in addition', often used in written or formal spoken contexts to add a point that builds on the previous one.
This product is environmentally friendly. What's more, it is low-cost.
To add an additional piece of information without necessarily implying it is more important or surprising.
A neutral, everyday conjunction meaning 'and also' or 'in addition'. It simply adds information without strong emphasis. Suitable for casual conversation.
I'm busy today. What's more, I'm a bit tired.
A simple conjunction meaning 'also' or 'moreover', used in both spoken and written Japanese. It is less emphatic than その上.
その上 implies the added point is more significant or surprising, while それに simply adds information without emphasis. Use その上 when you want to say 'and even more importantly', and それに for neutral 'and also'.
He is rich. What's more, he has a good personality. (emphasizing the surprising combination)
He is rich. What's more, his brother is also rich. (simply adding a related fact)
Do not translate 'what's more' literally as 何がもっと (nani ga motto) or similar. It is not a question in Japanese. Use the conjunctions listed above.
This book is interesting. What's more, it's educational.