A word appearing as ᴱQ. saminda or saminwa “silky” in the Qenya Lexicon of the 1910s, an adjective form of ᴱQ. samin “silk” (QL/81).
Neo-Quenya: Since I retain ᴺQ. samin “silk” (samind-) for purposes of Neo-Quenya, I’d retain ᴺQ. saminda “silky” as well.
An isolated word with no clear derivation appearing in the Qenya Lexicon and Poetic and Mythological Words of Eldarissa of the 1910s as ᴱQ. samin (samind-) “silk” (QL/81; PME/81).
Neo-Quenya: There is no evidence of this word in Tolkien’s later writings, but there are no other later Quenya “silk” words either, so I’d retain ᴺQ. samin “silk” for purposes of Neo-Quenya.