IPA: //ʌnˈsprʌŋ//
KK: /ʌnˈsprʌŋ/
Describing something that does not have springs or has not been activated by springs.
The unsprung weight of the vehicle affects its handling and performance.
Unsprung → It is formed from "un-" (meaning not) and "spring" (from Old English "springan", meaning to leap or burst forth). The word "unsprung" means not having sprung or not having leaped forth.
Think of 'not' ('un-') having 'leaped' ('spring') — that's why unsprung means something that has not leaped or burst forth.