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.
It's almost similar to the previously released Windows Speech Recognition (WSR), but this time, you don't need to train your PC to recognize your voice.
Source: https://www.slashgear.com/1346822/forgotten-windows-features/