The phrase "full-blooded" can be used to describe a person or animal that is considered to be of pure or complete lineage. Some synonyms that can express this idea include purebred, thoroughbred, and pedigreed. In addition, the phrase can also be used to describe someone with a strong, vigorous, or robust personality. Other phrases that convey this sentiment include spirited, dynamic, bold, and passionate. Alternatively, the phrase "full-blooded" could imply a sense of abundance, completion, or saturation. Synonyms that could express this sense of fullness might include plentiful, ample, profuse, or abundant. Ultimately, the choice of synonym will depend on the context and connotation of the word "full-blooded" in each individual situation.