Synonyms that are in the dictionary are marked in green. Synonyms that are not in the dictionary are marked in red.
Antonyms that are in the dictionary are marked in green. Antonyms that are not in the dictionary are marked in red.
If you have an Apple Pencil, you can also use that to take a quick screenshot, which is even handier when you're already working with your stylus.
Source: https://www.digitaltrends.com/mobile/how-to-take-a-screenshot-ipad/