Related Clues:

• None at all
• Put into code
• Word with bar or binary
• Love, in tennis
• "Beetle Bailey" character
• Bubkes
• Nothing to write home about
• Nothing, slangily
• See 46-Down
• Hardly Mr. Personality
• Nobody, slangily
• Round figure?
• Something to break
• No-show's test score
• Low score