An eccentric person could be described in a variety of ways, each one conveying a slightly different meaning. Some synonyms for "eccentric person" might include "quirky," "unconventional," or "offbeat." Other words that could be used to describe an eccentric individual might include "idiosyncratic," "unorthodox," or "peculiar." These words suggest someone who thinks and behaves differently than the norm, and who doesn't conform to societal expectations. Other possible synonyms for "eccentric person" might include "oddball," "weirdo," or "freak," although these terms can have a negative connotation, so they may not be the best choice in all situations. Ultimately, the choice of word depends on the speaker's intent and the context in which the word is being used.