Example:

1. I have some additional information that I'd like to share with you.

2. We may need to hire additional staff if we're going to meet our deadlines.

3. Do you have any additional comments?

4. Please let me know if you need any additional help.

5. I'm not sure if this is the right decision, but we can always make additional changes later if we need to.

Synonyms: extra, supplemental, supplementary, more, farther

Antonyms: necessary, essential, vital, critical,indispensable