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.
Former national security advisor John Bolton said on Monday that it would be a 'serious problem' if suspected Chinese spy balloons flew over the U.S. during the Trump administration without officials at the time being alerted.