So sad is a common phrase that is used to indicate a profound feeling of disappointment, sorrow, or loss. However, there are several antonyms for this phrase that can help individuals to express a different range of emotions such as joy, elation, and contentment.
Some antonyms for the phrase 'so sad' could include cheerful, ecstatic, overjoyed, content, glad, thrilled, delighted, and elated. For instance, when a joyful event takes place, people would use words like happy, excited or elated to describe their feeling. These words represent the opposite of "so sad" as they express feelings of happiness, bliss, and good fortune.
In conclusion, there are many antonyms for "so sad," and it all depends on the context in which the word is being used.