highest-quality (adjective) first-rate: highest quality
Sinonime: begrimed, besmirched, cruddy,
dingy*, filthy, foul, grubby, grungy, messy, mucky, nasty, scuzzy, sleazy*, smeared, smutty, soiled, sooty,
sordid, squalid, unclean
Antonime: clean, pure, sterile