Related Clues:

• Not with it
• Not on the ball
• Ignorant
• Lacking knowledge
• Not informed
• Left in the dark
• Out of the loop
• Not told
• "Everybody is __, only on different subjects": Will Rogers
• Ignorant (of)
• Out of the know
• Not in the know
• Not having knowledge or realisation
• Unlearned, lacking knowledge
• Paying no attention