Part of speech: Adjective
of goods or commodities; freely exchangeable for or replaceable by another of like nature or kind in the satisfaction of an obligation
The word "fungible" comes from Latin fungor, which was borrowed from Medieval Latin fungibilis.
function – A related word in the same word family.
ible – A related word in the same word family.
Legal and medical professions still use Latin phrases because of its precision and historical authority.