Related Clues:

• Inter
• Create a cryptogram
• Cover completely
• Conceal, in a way
• Put under?
• Suppress, as emotions
• Make unreadable, for security
• Completely repress
• Convert to dots and dashes
• Make hard to figure out
• Submerge
• Beat overwhelmingly
• Do some espionage work
• Entomb
• Create, as a cryptogram