IPA: /ʌnˈmɑːrkɪtəbl/
KK: /ʌnˈmɑrkɪtəbl/
This word describes something that cannot be sold or is not suitable for sale in the market.
The product was deemed unmarketable due to its high cost and low demand.
Unmarketable → It is formed from "un-" (meaning not) and "marketable" (from Middle English *marketable*, meaning able to be sold). The word "unmarketable" means not able to be sold or not suitable for sale.
Think of 'not' ('un-') being added to 'able to be sold' ('marketable') — that's why unmarketable means something that cannot be sold.