Unappealing means unpleasant, unattractive and unwelcome. The antonyms for unappealing are quite a few, such as appealing, attractive, delightful, enchanting, pleasing, captivating, charming, engaging, fascinating, alluring, winsome, and inviting. Appealing refers to something that is pleasing and generates interest, while attractive means something that is appealing or enticing to the eye. Delightful refers to something that brings joy and pleasure, and captivating implies something that has a strong influence on someone's attention or emotions. Charming and engaging refer to something that is pleasant or interesting. Alluring and winsome indicate a strong attraction, and fascinating refers to something that is captivating or intriguing.