functioning

nouns

process or manner of functioning or operating
"the power of its engine determines its operation"; "the plane's operation in high winds"; "they compared the cooking performance of each oven"; "the jet's performance conformed to high standards"
functioning, operation, performance
is derived from
function

adjectives

performing or able to perform its regular function
"a functioning flashlight"
functioning
antonym
malfunctioning
is similar to
(of e.g. a machine) performing or capable of performing
"in running (or working) order"; "a functional set of brakes"
functional, operative, running, working
is similar to
(used of computers) operating properly
"how soon will the computers be up?"
up