This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

• Lexulous
• Wordscraper
• Wordosaur

v. Present participle of function.

adj. Functional, working

n. Action of the verb function.

n. Manner by which something functions; the workings.

adj. performing or able to perform its regular function

n. process or manner of functioning or operating

"After they removed her pancreas, they extracted its islet cells and implanted them into her left forearm, creating what they call a functioning pancreas in her arm."

circular functions    functionate   

functionalities    functionality    functionally    functioned    functioning    functions   

relation    serve    social gathering    social affair   

action    ceremony    conjugate functions    dirichletian function    distributive function    function of judgment    potential function    adjunct spherical function    differentiable function    periodic function   

functor    dysfunctional    dysfunction    functional   

serve    roll    service    cut    double    run   

performance    activity    duty    office    province    service    sine    cosine    secant    cosecant   

compunction    conjunction    dysfunction    injunction    junction    malfunction   

activity    process    type    data    component    level    service