1. The quality of affording easy familiarity and sociability
   - camaraderie, comradeliness, comradery, comradeship, good-fellowship

Derived forms: chumminesses

See also: chummy

Type of: sociability, sociableness

• under wraps
• under-represent
• under-the-counter
• under-the-table
• underachieve
• underachievement
• underachiever
• underact
• underactive
• underage
• underarm
• underbelly
• underbid
• underbodice
• underbody
• underboss
• underbred
• underbrush
• undercarriage
• undercharge
• underclass
• underclassman
• underclothed
• underclothes
• underclothing