Good Sa·mar·i·tan 
/-səˈmerətən/ noun
plural ∼ -tans /-səˈmerətən/ noun [count] : a person who helps other people and especially strangers when they have trouble
▪ We had a flat tire on the highway but fortunately a Good Samaritan stopped to help us change it.
▪ We had a flat tire on the highway but fortunately a Good Samaritan stopped to help us change it.
