Synonyms of the word

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).

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.

bad

• adj. Not good; unfavorable; negative.
• adj. Not suitable or fitting.
• adj. Seemingly non-appropriate, in manners, etc.
• adj. Unhealthy.
• adj. Tricky; stressful; unpleasant.
• adj. Evil; wicked.
• adj. Faulty; not functional.
• adj. (of food) Spoiled, rotten, overripe.
• adj. (of breath) Malodorous, foul.
• adj. (informal) Bold and daring.
• adj. (hip-hop slang) good, superlative.
• adj. (of a need or want) Severe, urgent.
• adv. (now colloquial) Badly.
• n. (slang) Error, mistake.
• n. (countable, uncountable, economics) An item (or kind of item) of merchandise with negative value; an unwanted…
• adj. (slang) Fantastic.
• v. (archaic) Alternative past tense of bid. See bade.
• v. (Britain, dialect, transitive) To shell (a walnut).

crappy

• adj. (chiefly Canada, US, colloquial, mildly vulgar) Of very poor quality; unpleasant; distasteful.
• adj. (chiefly Canada, US, colloquial, mildly vulgar, especially with "feel") Bad, sick, or depressed.
• adj. (chiefly Canada, US, colloquial, mildly vulgar) Covered in crap (faeces/feces).

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.

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.

icky

• adj. (informal) unpleasantly sticky; yucky; disgusting.
• adj. (informal) excessively sentimental.
• adj. (informal) unwell or upset; in a bad state of mind or health.

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.

rotten

• adj. Of perishable items, overridden with bacteria and other infectious agents.
• adj. In a state of decay.
• adj. Cruel, mean or immoral.
• adj. Bad or terrible.
• adv. To an extreme degree.

shitty

• adj. (vulgar, colloquial) Very bad; unpleasant; miserable; insignificant.
• adj. (US, vulgar, slang, not comparable) Under the influence of illicit drugs or alcohol; drunk; high.
• adj. (Britain, Australia, New Zealand, vulgar, slang) Annoyed.
• adj. (vulgar) Covered in crap (faeces/feces).
• adj. (informal, vulgar) Of low quality or standard; inferior; not up to par, or failing one's expectations.

soiled

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

stinking

• adj. Having a pungent smell.
• adj. Very bad and undesirable.
• adj. (euphemistic) An intensifier, a minced oath.
• v. present participle of stink.
• n. The emission of a foul smell.

stinky

• adj. Having a strong, unpleasant smell; stinking.
• adj. (informal) Bad, undesirable.

unclean

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