1. Without warning or announcement
   - unannounced, unheralded

See also: unexpected

• bushtit
• bushveld
• bushwalking
• bushwhack
• bushwhacker
• bushwhacking
• bushy
• bushy aster
• bushytail woodrat
• busily
• business
• business activity
• business address
• business agent
• business angel
• business card
• business college
• business community
• business concern
• business cycle
• business data processing
• business deal
• business deduction
• business department
• business district