Hello and welcome to another JapaBit!
When you first learn Japanese, the most common (and probably only) word you learn for “more” is もっと. Today we are going to look at another useful word you can use to mean “(even) more) which can generally be replaced with もっと.
The word in question is さらに（更に）and can be used to modify verbs, adjectives and adverbs (like もっと). Let’s look at some examples!
A new technology was used, further improving the security of this credit card.
Welcome! Welcome! Prices are cheaper today even more than usual!
If you add a little bit of salt to this dish it will be more delicious.
3 people were arrested in this case, but it is believed that more people are involved in the incident.
By using the camera function you can take cleaner/nicer pictures.
The shop will be renovated in July and become even more convenient.
For those who would like to know more about the contents of the brochure, please contact this phone number.
Please keep in mind that there are more words that mean “more/further” in Japanese such as より、