Little leaguer, a term commonly used to describe young baseball players, has several synonyms that can be used to add variety to your writing. Some of these synonyms include "young ballplayer," "junior baseball player," "rookie baseman," "freshman pitcher," "minor leaguer," and "up-and-coming athlete." Each of these synonyms can be used interchangeably with little leaguer to describe young players who are just starting their baseball careers. The use of these synonyms not only shows off a writer's vocabulary but also helps create a more engaging and dynamic piece of writing.