clannish (adj.)

• arrogant
• cliquish
• contemptuous
• contumelious
• disdainful
• elect
• ethnic
• ethnocentric
• exclusive
• genetic
• gentile
• haughty
• lineal
• national
• phyletic
• phylogenetic
• racial
• scornful
• select
• selective
• sneering
• sniffy
• snobbish
• snobby
• snooty
• snotty
• supercilious
• totemic
• tribal
• withering