Habitually clean.

Roget 652: clean, cleanly; pure; immaculate; spotless, stainless, taintless; trig; without a stain, unstained, unspotted, unsoiled, unsullied, untainted, uninfected; sweet, sweet as a nut.    neat, spruce, tidy, trim, gimp, clean as a new penny, like a cat in pattens; cleaned etc. v.; kempt^†.    abstergent^†, cathartic, cleansing, purifying.    ... show more

Smoothly and without difficulty; precisely and deftly:
— She played the piano accompaniment cleanly.
— He bounced it cleanly off the wall.

synonym: flawlessly.

In a manner that minimizes dirt and pollution.