Synonyms of the word

grotty

• adj. (slang, Britain, Canada, Australia, New Zealand) unpleasant, dirty, slovenly or offensive.

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.

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.