Related Clues:

• Deeply personal
• Private
• Central
• Deepest
• Nearest the center
• ___ cases (generally)
• Secret to the max
• Deepest, as thoughts or feelings
• Hardest to get at
• Deepest within the self
• Closest to the center
• Nearest the heart
• Situated farthest from the edges
• Superlatively secret
• Being deepest within the self