taint

American Heritage® Dictionary of the English Language, Fourth Edition

1. v. To affect with or as if with a disease.
2. v. To affect with decay or putrefaction; spoil. See Synonyms at contaminate.
3. v. To corrupt morally.
4. v. To affect with a tinge of something reprehensible.
5. v. To become affected with decay or putrefaction; spoil.
6. n. A moral defect considered as a stain or spot. See Synonyms at stain.
7. n. An infecting touch, influence, or tinge.

Century Dictionary and Cyclopedia

1. n. Color; hue; dye; tinge.
2. n. A stain; a spot; a blemish; a touch of discredit or dishonor.
3. n. An infecting tinge; a trace; a touch.
4. n. A corrupting or contaminating influence, physical or moral; a cause or condition of depravation or decay; an infection.
5. n. A certain spider of small size and red color, reputed to be poisonous: perhaps a species of Latrodectus, but probably only a harvest-mite, and not poisonous.
6. To tinge; tincture; hence, to imbue; touch; affect.
7. To imbue with something of a deleterious or offensive nature; infect or impregnate with a noxious substance or principle; affect with insalubrity, contagion, disease, or the like.
8. To make noisome or poisonous in constitution; corrupt the elements of; render putrid, deleterious, or unfit for use as food or drink.
9. To corrupt morally; imbue with perverse or objectionable ideas; exert a vitiating influence over; pervert; contaminate.
10. To give a corrupted character or appearance to; affect injuriously; stain; sully; tarnish.
11. To disgrace; fix contumely upon.
12. To treat with a tincture; embrocate; mollify.
13. = Syn. 2-5. Contaminate, Defile, Taint, Pollute, Corrupt, Vitiate. Whether these words are regarded as meaning the injuring of purity or the spoiling of value, they are in the order of strength, except that each is used in different degrees of strength, and that vitiate is one of the weaker words and taint a strong word for rendering impure. Corrupt means the absolute destruction of purity. They all suggest an influence from without coming upon or into that whose purity or value is injured.
14. To be tinged or tinctured; become imbued or touched.
15. To become tainted or rancid; be affected with incipient putrefaction.
16. Tainted; touched; imbued.
17. To touch or hit in tilting; reach with a thrust, as of a lance or other weapon.
18. To thrust, as a lance or other weapon, especially in tilting.
19. To make an effort or essay, as a juster; tilt, as in the just; make a thrust.
20. n. A thrust, as of a lance in tilting; especially, a preliminary movement or trial with a weapon, as in the tilt, or, by extension, in battle.
21. To attaint.

Wiktionary

1. n. A contamination, decay or putrefaction, especially in food
2. n. A mark of disgrace, especially on one's character; blemish
3. n. obsolete tincture; hue; colour
4. n. obsolete infection; corruption; deprivation
5. v. To contaminate or corrupt (something) with an external agent, either physically or morally.
6. v. To spoil (food) by contamination.
7. n. A thrust with a lance, which fails of its intended effect.
8. n. An injury done to a lance in an encounter, without its being broken; also, a breaking of a lance in an encounter in a dishonorable or unscientific manner.
9. n. slang The perineum.

GNU Webster's 1913

1. n. obsolete A thrust with a lance, which fails of its intended effect.
2. n. obsolete An injury done to a lance in an encounter, without its being broken; also, a breaking of a lance in an encounter in a dishonorable or unscientific manner.
3. v. obsolete To thrust ineffectually with a lance.
4. v. obsolete To injure, as a lance, without breaking it; also, to break, as a lance, but usually in an unknightly or unscientific manner.
5. v. obsolete To hit or touch lightly, in tilting.
6. v. To imbue or impregnate with something extraneous, especially with something odious, noxious, or poisonous; hence, to corrupt; to infect; to poison.
7. v. Fig.: To stain; to sully; to tarnish.
8. v. To be infected or corrupted; to be touched with something corrupting.
9. v. To be affected with incipient putrefaction.
10. n. obsolete Tincture; hue; color; tinge.
11. n. Infection; corruption; deprivation.
12. n. A blemish on reputation; stain; spot; disgrace.
13. v. Aphetic form of attaint.

WordNet 3.0

1. n. the state of being contaminated
2. v. contaminate with a disease or microorganism
3. v. place under suspicion or cast doubt upon