functioning
1. [ noun ] process or manner of functioning or operating
Synonyms: performance operation
Examples:

"the power of its engine determine 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"

Related terms: work process job go
2. [ adjective ] performing or able to perform its regular function
Examples:

"a functioning flashlight"

Related terms: malfunctioning running up
Similar spelling:   function
  functional
  functionary
  functionally
  functionality
  functionalist
  functionalism
  function_word
  function_call
  fumigation