These are an essential part of the lexicon, and not merely functional morphemes.
The auditorium, with its industrial gray walls and tiny white Christmas lights, seems merely functional and, for the time being, new.
The dining room is tiny, unadorned and merely functional, with just 24 seats.
There is a single-player campaign, but it's merely functional.
The outpost had been built to a massive scale, but the architecture was merely functional and the place seemed largely uninhabited.
The factory makes merely functional shoes, and the market for them is drying up.
Luckily, the merely functional story never gets in the way of the punch lines.
As a result, products cannot be merely functional.
Before the machine age, elaborate surface treatments distinguished the well wrought from the merely functional.
But it is much more than a merely functional community.