soiling

stain

Lasting surface discoloration

• blotMark left by spillage
• smudgeUnclear dirty mark
• spotMark or location

mark · blemish · splotch · splatter · streak · spill · residue · discoloration · smear · blotch

dirt

Loose dry earth

• grimeIngrained surface dirt
• filthFoul, accumulated matter
• mudWet soil mixture

muck · dust · soot · sediment · residue · caked · grubby · grimy · dingy · smeared

degrade

Lower in standing

• sullyDamage one's standing
• besmirchTo soil someone's reputation
• tarnishOxidation discoloration on metal

dishonor · disgrace · defile · corrupt · debase · ruin · damage · mar · spoil · violate

contaminate

Make unclean or unsafe

• polluteMake impure harmfully
• taintMake impure
• foulOffensive or illegal

adulterate · corrupt · defile · impure · toxins · sewage · runoff · effluent · chemicals · pathogens

diaper

Absorbent infant undergarment

• nappyInfant's absorbent undergarment
• bedwettingInvoluntary urination during sleep
• enuresisInvoluntary voiding of urine

accident · leakage · underwear · laundry · absorbent · liner · pad · protective · elderly · infant

• contaminationpolluting, contaminating, fouling, tainting, poisoning
• filthdirt, grime, dirty, filthy, muck
• housetrainingpotty training, toilet training, housebreaking, housebroken, house-trained
• dirtyingdirtying, staining, smearing, smudging, muddying
• book damagewater damage, torn pages, loose pages, cracked spine, broken spine
• staining methodsdyeing, tinting, batik, tie-dyeing, bleaching