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.
This was perhaps best conveyed in "Silence in the Library," when the Doctor told an unnerved River Song that the Vashta Nerada were not hiding in every shadow, "but any shadow."
Source: https://www.cbr.com/doctor-who-steven-moffat-return-conditions/