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.
Drag and drop the icons into your preferred order, or tap the red minus button to remove the option altogether.
Source: https://www.cnet.com/tech/mobile/apple-watch-tips-change-these-settings-for-a-better-experience/