Synonyms of the word

filthy

• adj. Covered with filth; very dirty.
• adj. Obscene or offensive.
• adj. Very unpleasant or disagreeable.
• v. (transitive) To make very dirty; to cover in filth.

awful

• adj. Oppressing with fear or horror; appalling, terrible.
• adj. (now rare) Inspiring awe; filling with profound reverence or respect; profoundly impressive.
• adj. Struck or filled with awe.
• adj. (obsolete) Terror-stricken.
• adj. Worshipful; reverential; law-abiding.
• adj. Exceedingly great; usually applied intensively.
• adj. Very bad.
• adv. (colloquial, US, Canada) Very, extremely.

dirty

• adj. Unclean; covered with or containing unpleasant substances such as dirt or grime.
• adj. That makes one unclean; corrupting, infecting.
• adj. Morally unclean; obscene or indecent, especially sexually.
• adj. Dishonourable; violating accepted standards or rules.
• adj. Corrupt, illegal, or improper.
• adj. Out of tune.
• adj. Of color, discolored by impurities.
• adj. (computing) Containing data which need to be written back to a larger memory.
• adj. (slang) Carrying illegal drugs among one's possessions or inside of one's bloodstream.
• adj. (informal) Used as an intensifier, especially in conjunction with "great".
• adj. Sleety; gusty; stormy.
• adv. In a dirty manner.
• v. (transitive) To make (something) dirty.
• v. (transitive) To stain or tarnish (somebody) with dishonor.
• v. (transitive) To debase by distorting the real nature of (something).
• v. (intransitive) To become soiled.

foul

• adj. Covered with, or containing unclean matter; dirty.
• adj. (of words or a way of speaking) obscene, vulgar or abusive.
• adj. Detestable, unpleasant.
• adj. Disgusting, repulsive; causing disgust.
• adj. (obsolete) Ugly; homely; poor.
• adj. (of the weather) Unpleasant, stormy or rainy.
• adj. Dishonest or not conforming to the established rules and customs of a game, conflict, test, etc.
• adj. (nautical) Entangled and therefore restricting free movement, not clear.
• adj. (baseball) Outside of the base lines; in foul territory.
• v. (transitive) To make dirty.
• v. (transitive) To besmirch.
• v. (transitive) To clog or obstruct.
• v. (transitive, nautical) To entangle.
• v. (transitive, basketball) To make contact with an opposing player in order to gain advantage.
• v. (transitive, baseball) To hit outside of the baselines.
• v. (intransitive) To become clogged.
• v. (intransitive) To become entangled.
• v. (intransitive, basketball) To commit a foul.
• v. (intransitive, baseball) To hit a ball outside of the baselines.
• n. (sports) A breach of the rules of a game, especially one involving inappropriate contact with an opposing…
• n. (bowling) A (usually accidental) contact between a bowler and the lane before the bowler has released…
• n. (baseball) A foul ball, a ball which has been hit outside of the base lines.

lousy

• adj. Remarkably bad; of poor quality, dirty, or underhanded; mean, contemptible.
• adj. Infested with lice.
• adj. (colloquial, usually with with) Filled or packed (with something, usually bad).

nasty

• adj. (now chiefly US) Dirty, filthy.
• adj. Contemptible, unpleasant (of a person).
• adj. Objectionable, unpleasant (of a thing); repellent, offensive.
• adj. Indecent or offensive; obscene, lewd.
• adj. Spiteful, unkind.
• adj. (chiefly Britain) Awkward, difficult to navigate; dangerous.
• adj. (chiefly Britain) Grave or dangerous (of an accident, illness etc.).
• adj. (slang, chiefly US) Formidable, terrific; wicked.
• n. (informal) Something nasty.
• n. (euphemistic, preceded by "the") Sexual intercourse.

smutty

• adj. Soiled with smut; blackened, dirty.
• adj. Obscene, indecent.

soiled

• v. simple past tense and past participle of soil.
• adj. dirty.

unclean

• adj. Dirty, soiled or foul.
• adj. Not moral or chaste.
• adj. Ritually or ceremonially impure or unfit.