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 the original master recording exists as a hi-res file, the MQA format can include that extra info too — without making the file itself any larger — which can later be extracted if you have MQA-compatible software or audio equipment.
Source: https://www.digitaltrends.com/home-theater/what-is-mqa/