IPA: //ʌnˈsiːzənd//
KK: /ʌnˈsizənd/
Not having any added flavoring or spices; also refers to something that is not fully developed or someone who is inexperienced.
The chef decided to use unseasoned vegetables for the dish to let the natural flavors shine through.
Unseasoned → It is formed from "un-" (meaning not) and "seasoned" (from the Old French *assaisonner*, meaning to add flavor or seasoning). The word "unseasoned" means not flavored or lacking seasoning.
Think of 'not' ('un-') having 'flavor' ('seasoned') — that's why unseasoned means lacking flavor.