Glad is an adjective that generally conveys a sense of happiness or contentment. However, there are several alternative words that could be used to express similar feelings. Joyful, delighted, pleased, elated, ecstatic, euphoric, overjoyed, thrilled, cheerful, and contented are all synonyms that convey a sense of happiness, satisfaction or pleasure. Additionally, words such as grateful, appreciative, thankful, and relieved could be used to express more specific emotions that relate to a sense of being glad. Whether it's a simple feeling of contentment, or a deeper sense of thankfulness, there are many words that can be used to communicate the emotion of being glad.