The phrase "carried one's weight" typically refers to someone who has pulled their own weight in a situation, taken responsibility, or contributed their fair share to a task or project. Synonyms for this phrase might include "pulled their weight," "shouldered the burden," "contributed equally," "taken ownership," "done their part," "held their own," "assumed responsibility," "pitched in," "contributed positively," "worked hard," "played a role," or "taken initiative." These phrases all convey a sense of someone who has done what was needed or expected of them and made a positive contribution to a group effort.