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 usually easy to recognize these messages by the numbers they come from — folks in South Carolina or San Bernardino aren't likely to be legitimately mistyping a Toronto number asking about a pet dog for sale or announcing a golfing party.
Source: https://www.digitaltrends.com/mobile/how-to-stop-spam-texts-iphone-android/