spotlessly

adv

adv

Etymology From spotless + -ly.

In a spotless manner.

And the kaleidescope ^([sic]) of distinctive colours sported by the spotlessly-maintained diesels of many different railways in the great Union stations of cities like Washington and St. Louis must have some thrills even for the most die-hard steam enthusiast.1955 April, Cecil J. Allen, “British Locomotive Practice and Performance”, in Railway Magazine, page 261:

Entry derived from the Wiktionary, under licence CC BY-SA 4.0 — list of authors.