An irrepressible optimist is someone who always sees the bright side of things, no matter what. They are relentlessly cheerful and positive, and they never give up hope. Synonyms for this term might include sunny-side up, hopeful, positive, buoyant, resilient, and cheerful. These individuals tend to be very inspiring to others, as they radiate positivity and spread happiness wherever they go. They are always looking for ways to improve themselves and the world around them, and they never lose sight of their goals. Overall, an irrepressible optimist is a valuable asset to any team or community, and their energy and enthusiasm are contagious.