Is there the word ''unmemorable'' in English?

Answer 1

Maybe (perhaps (at least according to certain authorities)) no; still, for me, intutitively, at least: a word as has, at the very least, a few senses; to wit: that which may not very likely ever be remembered; or, that as will not likely ever be remembered such as to ever very likely cause any result of particular significance to that group of people who could ever experience a serious use of the word; or...and so forth,

including: a word (of the English language) as shall never be remembered, even as it did once exist and was generally used by most, if not all, of those who spoke English as their native language; OR, ...(.).