From ultra- + clean. ultraclean (comparative more ultraclean, superlative most ultraclean) Exceptionally clean. 2009 January 27, Jane E Brody, “Babies...
ultraceremonious ultracharming ultracheap ultrachic ultracivil ultracivilized ultraclean ultraclear ultraclever ultraclose ultracognitive ultracold ultracolossal...
overclean show a clean pair of heels squeaky clean superclean, super-clean ultraclean unclean wipe the slate clean not dirty in an unmarked condition pure,...