1. The taste experience when vinegar or lemon juice is taken into the mouth
   "The tartness of the green apple was unexpected";
   - sour, sourness
    
2. A sharp sour taste
   "The tartness of the unripe fruit made it inedible";
   - acerbity
    
3. A rough and bitter manner
   "The debate descended into tartness";
   - bitterness, acrimony, acerbity, jaundice, thorniness

Type of: acidity, disagreeableness, gustatory perception, gustatory sensation, sourness, taste, taste perception, taste sensation

Encyclopedia: Tartness