The word "yukky" is an informal adjective commonly used to describe something that is unpleasant, disgusting or unappetizing. Antonyms for "yukky" include words such as delicious, delectable, savory, appetizing, palatable, and tasty. Other antonyms that describe a pleasant taste or smell include fragrant, aromatic, spicy, sweet, mellow, and refreshing. Similarly, antonyms that describe a desirable appearance or texture could include words like pleasing, attractive, appealing, smooth, tender, and succulent. These contrasting words highlight the polarity of the English language and are important for clear communication and effective writing.