1. Not knowledgeable about something specified
   "a person unacquainted with our customs"
   - innocent 
2. Having little or no knowledge of
   "unacquainted with city ways"
   - unacquainted with, unfamiliar with

See also: unfamiliar, uninformed

• Schoenberg
• schola cantorum
• scholar
• scholarly
• scholarly person
• scholarship
• scholastic
• scholastically
• scholasticism
• scholia
• scholiast
• scholium
• Schomburgkia
• Schonbein
• school
• school assignment
• school bell
• school board
• school bus
• school crossing
• school day
• school dictionary
• school district
• school newspaper
• school of dentistry