The antonyms for the word "ill-smelling" are numerous and include words such as fragrant, sweet-smelling, perfumed, aromatic, pleasant. When we think of things that are ill-smelling, we usually associate them with unpleasant odors such as decaying food, sewage, or mold. However, when we think of fragrant things, they often evoke images of fresh flowers, warm baked goods, or a freshly brewed cup of coffee. The use of antonyms is important because it helps us to communicate more effectively and accurately, allowing us to describe something in a positive or negative way while avoiding any confusion or misunderstandings.