fungible /ˈfʌndʒɪbəl/adjective 1noun 1forms 3 adjective1 •Able to be substituted for something of equal value or utility.Take away this fungible instrument from the service of our necessities and how shall we exercise our Charity, which is a branch of Religion and Justice, as well as of Humanity? — 1649 noun[in the plural]1 •Any fungible item.The archetypical fungible is money: if I drop a £1 coin in the street it is a matter of indifference to me whether I pick up that coin or another £1 coin lying next to it. — 2005 formsfungibles · more fungible · most fungible