Related Clues:

• Lacking backbone
• Humbly patient
• Limited in amount
• Far from aggressive
• Hardly forward
• Inclined to avoid the spotlight
• Disinclined to brag
• Like 16-Across
• Clark Kent-like
• Devious, in a way
• Hardly boastful
• Not prone to bragging
• Easily scared
• Averse to first moves
• "... the ___ shall inherit ..."