Taxacom: Taxacom| Genus name question

[David Redei]

Is there any adjective which cannot be nominalized (= treated as a noun)?
Like magnificus = magnificent [adjective] -->  "the magnificent one / the
magnificent person" or even "the person called Magnificus" [noun]. Just
like in English, "increase tax for the rich!", where "rich" is in fact a
noun, meaning "the rich persons".

In Psalm 13 of the Vulgata (Psalm 14 in King James), the well-known passage
goes like: "Dixit insipiens in corde suo: non est Deus". If you look it up
in a dictionary you will see that insipiens is an adjective meaning
"foolish": https://nam10.safelinks.protection.outlook.com/?url=https%3A%2F%2Fen.wiktionary.org%2Fwiki%2Finsipiens&data=04%7C01%7Ctaxacom%40lists.ku.edu%7Cc0c9705361bb4fd966ac08d9dd5c9a20%7C3c176536afe643f5b96636feabbe3c1a%7C0%7C0%7C637784212068771131%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000&sdata=dOw%2FydugFgvTvohQwW6iHXC5Fn3EZA2BVeYHrAoBerc%3D&reserved=0 , and it is true, it is
very commonly used as an adjective, you can form its superlative as
"insipientissimus" etc. But in the above sentence it is nominalized = it is
used as a noun (note "suo" in the same sentence!), meaning "the foolish
one" or "the fool".

Whether a word is an adjective or a noun is not an inherent attribute of
the word itself (as a lexical entry), but it rather indicates how the word
functions grammatically *in a given sentence*. ICZN says that the name must
be TREATED as a noun, and along the above lines pretty much any adjective
(more precisely, any word which can take the function of an adjective in a
sentence) can be TREATED as a noun. So do not worry too much about it, John.

With best wishes,

David Redei