The antonyms for "disappointing" are plentiful, and they all evoke a sense of satisfaction, fulfillment, and excitement. "Satisfying," "delightful," "fulfilling," and "gratifying" all suggest that something has lived up to or even exceeded expectations. "Impressive," "remarkable," "stunning," and "exceptional" are all adjectives that describe something that is extraordinary and likely to inspire awe. At the same time, "enjoyable," "pleasurable," and "fun" all suggest that something is entertaining, lighthearted, and perhaps even joyful. When we seek to avoid disappointment, or want to describe an experience that has left us feeling upbeat, these antonyms are our go-to vocabulary.