Related Clues:

• Going without saying?
• Not said though understood
• Implied, but not expressed
• Implied but unsaid
• Aircraft engine casing
• Implied one should be into diplomacy
• Implied, unstated
• Silent, returning in arctic atmosphere
• Unrecorded now the historian leaves us out
• I engaged in diplomacy without speaking
• Understood it after Tom retired
• Understood that any crossword is tricky, initially
• One is bound by discretion, that's understood
• Respect, admiration
• Implied historian's not American