Considering titles.....

Main Entry:	dirty
Part of Speech:	adjective 1
Definition:	unclean
Synonyms:	bedraggled, black, contaminated, cruddy*, crummy, defiled, disarrayed, dishabille, disheveled, dreggy, dungy, dusty, filthy, foul, fouled, greasy, grimy, grubby, grungy*, icky*, lousy, messy, mucky*, muddy, mung*, murky, nasty, pigpen*, polluted, raunchy, scummy*, scuzzy*, skank, slatternly, slimy, sloppy, slovenly, smudged, smutty, sooty, spattered, spotted, squalid, stained, straggly, sullied, undusted, unhygienic, unkempt, unlaundered, unsanitary, unsightly, unswept, untidy, unwashed, yucky*
Antonyms:	clean, hygienic, immaculate, sanitary, sparkling, spotless, sterile, unsoiled, washed

Main Entry:	contamination
Part of Speech:	noun
Definition:	adulteration
Synonyms:	contagion, corruption, decay, defilement, dirtying, disease, epidemic, filth, foulness, impurity, infection, pestilence, plague, poisoning, pollution, rottenness, spoliation, taint
Antonyms:	decontamination

Main Entry:	blight
Part of Speech:	noun
Definition:	disease
Synonyms:	bane, canker, contamination, corruption, curse, decay, dump, evil, eyesore, fungus, infestation, mildew, pest, pestilence, pollution, rot, scourge, sight, withering, woe
Antonyms:	boon, bounty, health

Main Entry:	contagion
Part of Speech:	noun
Definition:	infection
Synonyms:	bane, contamination, corruption, illness, miasma, pestilence, plague, poison, pollution, taint, transmission, venom, virus

Main Entry:	damage
Part of Speech:	noun
Definition:	injury
Synonyms:	accident, adulteration, adversity, affliction, bane, blemish, blow, breakage, bruise, casualty, catastrophe, contamination, corruption, debasement, depreciation, deprivation, destruction, deterioration, detriment, devastation, disservice, disturbance, evil, hardship, harm, hurt, illness, impairment, infliction, knockout, marring, mischief, mishap, mutilation, outrage, pollution, ravage, reverse, ruin, ruining, spoilage, stroke, suffering, waste, wound, wreckage, wrecking
Antonyms:	improvement, repair, service

Main Entry:	arrival
Part of Speech:	noun 1
Definition:	landing
Synonyms:	accession, advent, alighting, appearance, approach, arriving, debarkation, disembarkation, dismounting, entrance, happening, homecoming, influx, ingress, landing, meeting, occurrence, return
Antonyms:	departure, exit

Source: Thesaurus.com

Also, tache (fr: stain), or defloration