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.
A small number of the chemicals have been well-studied, with the most known about the two oldest, and now discontinued, compounds — PFOS and PFOA.
We can say a few things about it, but only things that were learned from elsewhere, from artifacts whose context was left intact and well-studied.