Related Clues:

• It may be under your hat
• Unknown to but a few
• Quashed
• Antiperspirant brand once advertised as "strong enough for a man"
• Antiperspirant brand once advertised as 'strong enough for a man'
• Kept hidden
• Kept out of sight
• Became a hermit
• Camouflaged
• Didn't release, as bad news
• Known by only a few
• Undercover
• Something given, often not to be passed on
• Inner
• 'Humpty Dumpty -- a wall'