New-blood can be used to describe a person who is new to a particular area or organization and brings fresh ideas, perspectives, and energy to the table. Synonyms for this term include newcomer, rookie, novice, greenhorn, neophyte, fledgling, and apprentice. A newcomer or rookie is someone who is new to a field or activity but shows promise and potential. A novice is a beginner who is trying to gain knowledge and experience in a particular field. A greenhorn is someone who lacks experience and knowledge. A fledgling is a person who is just starting out in something and needs guidance and support. An apprentice is a person who is learning a trade or skill under the guidance of an experienced professional.