The phrase "come short" is often used to describe situations or actions that fall short of expectations or standards. In writing, there are several synonyms that can be used to convey this message, such as "fall behind," "miss the mark," "be deficient," "come up shy," "be inadequate," "be insufficient," "lag behind," "fail to measure up," "not make the grade," or "not live up to expectations." By using these synonyms, writers can add variety to their writing and describe situations or actions more precisely, while avoiding repetition and keeping their content engaging and interesting.