A tenderfoot is someone inexperienced. Usually, a tenderfoot is someone unaccustomed to outdoor living.
Originally, a tenderfoot was an immigrant to the United States who wasn't used to the rough pioneer life, especially the hardships of ranching and mining. From there, this word came to mean any inexperienced person. A rookie on a football team is a tenderfoot. Someone new at a job could is a tenderfoot. This word best applies to people who aren't used to roughing it outdoors. A summer camp counselor who isn’t used to sleeping outside is definitely a tenderfoot.