I. ˈfən-jə-bəl noun
Date: circa 1765
: something that is — usually used in plural
II. adjective
Etymology: New Latin fungibilis, from Latin fungi to perform — more at function
Date: 1818
1. : being of such a nature that one part or quantity may be replaced by another equal part or quantity in the satisfaction of an obligation
oil, wheat, and lumber are fungible commodities
2. : interchangeable
3. : flexible 3
• fun·gi·bil·i·ty ˌfən-jə-ˈbi-lə-tē noun