The phrase "a perfectly functioning" is correct and usable in written English.
It can be used to describe something that operates without any issues or problems.
Example: "The machine is a perfectly functioning piece of equipment that has been maintained regularly."
Alternatives: "a fully operational" or "a smoothly running".
You can lose portions of the brain and still have a perfectly functioning, P-functioning person.
A demonstration video shows a perfectly functioning laptop having the USB Killer plugged in.
Another reason for caution is that it isn't obvious how useful even a perfectly functioning quantum computer would be.
We are not arguing that the State Department is a perfectly functioning agency that requires no improvements.
So that is a big and enduring contribution — some amount of fluctuation does come out of a perfectly functioning economy.
His heartbeat, circulation, kidney and liver function, lungs, motility all the indicators were right where they should be for a perfectly functioning metabolism.
Newly married to the actor Ron Livingston ("Office Space"), who was holding hands with her at the theater before the interview began, Ms. DeWitt described her life as well balanced, with work opportunities and, she said with a laugh, "perfectly functioning relationships".
However, no significant difference could be found in the number or nature of proteins involved in restriction-modification or DNA uptake systems between V. metoecus and V. cholerae in our study, although poorly transformable V. cholerae, despite having an intact and perfectly functioning DNA uptake system, have been reported (Katz et al. 2013).
The biggest capitulation has been to the dogma of perfectly functioning markets – an ideal foisted on the public sector as a norm.
Heynckes also noted that Guardiola will take over a "perfectly functioning team," and it would be hard to argue otherwise.
And now a new technological advancement hopes to make your perfectly functioning nose obsolete.
