castaway

adj

1. (not-comparable)Cast adrift or ashore; marooned.

   “After the mutiny, the castaway ship's officers suffered a month at sea in the lifeboat.”

2. (not-comparable)Shipwrecked.

   “The storm left them castaway on an uninhabited island.”

3. (not-comparable)Cast out; rejected or excluded from a group.

noun

1. A shipwrecked sailor.

   “Robinson Crusoe was a famous fictional castaway.”

2. A discarded person or thing.

   “This old coat was a castaway in someone's trash.”

3. An outcast; someone cast out of a group or society.

   “These homeless people are society's castaways.”