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.
He added that the update also aims to improve autocorrect’s ability to fix grammatical errors and provide predictions for words and phrases in line as users type — which can be filled in by tapping the space bar.