IPA: //ʌnˈsɔːltɪd//
KK: /ʌnˈsɔltɪd/
Describing something that does not have salt added to it.
I prefer to use unsalted butter for baking.
Unsalted → It is formed from "un-" (meaning not) and "salt" (from Old English "sealt", meaning a mineral used for seasoning and preserving food). The word "unsalted" means not containing salt or lacking salt.
Think of 'not' ('un-') having 'salt' — that's why unsalted means without salt.