Of food and drink: unsettling to the stomach or health; causing or liable to cause nausea or vomiting. Also in figurative context.

Insipid, tasteless, ill-tasting; having a sickly taste, nauseous.

Highly offensive to the senses; (of a smell, taste, sound, etc.) extremely unpleasant, disgusting. Also in later use colloquial: awful, terrible.

Insipid, tasteless, flat; also, ill-tasting, nauseous, esp. through being over-sweet.

Of food: unpleasant, esp. because coarse or rotten (cf. sense 3). Of diet or consumption: consisting or made up of coarse or unpleasant…

Nauseating, rotten, mawkish.

Offensive to smell or taste; nauseating. Now frequently in predicative use passing into sense 3a.

Distasteful.

Disagreeable to the taste; causing disgust; ‘nasty’.

Causing literal disgust; offensive to the taste or other sense; disagreeable, sickening, nauseous.

literal. spec. Of a flavour or smell: nasty, repellent.

Sickening, nauseating (in taste); sickly-sweet. Now rare.

Nauseating; having a nauseating or disgusting taste or smell. Also in later use: tasting sickly or insipid.

That disgusts (see the verb); distasteful, sickening, repulsive.

Given to puking; inclined to puke or vomit; sickly, queasy.

figurative and transferred. Nauseous, distasteful.

Causing nausea.

Filthy, smelly; disgusting. Also: inferior, rubbish.

Dirty, filthy; disgusting. Also (of weather): foul, rainy.

Disgusting, awful, unattractive. Also used simply as an intensifier.