IPA: /ʌnˈweɪstɪd/
KK: /ʌnˈweɪstɪd/
Not used or spent in a way that is unproductive or unnecessary.
The resources were used in an unwasted manner, ensuring efficiency.
Unwasted → It is formed from "un-" (meaning not) and "wasted" (from Old English "wæstian", meaning to waste or squander). The word "unwasted" means not wasted or not squandered.
Think of 'not' ('un-') wasting something ('wæstian') — that's why unwasted means something that has not been wasted.