Related Clues:

• Self-effacing
• Unwilling
• Mother
• It's the word!
• The word, maybe
• Having sealed lips
• "___'s the word"
• Buttoned up
• Tight-lipped
• Not talkative
• Not inclined to speak
• Autumn blossom, briefly
• It's the word?
• British family member
• It's "the word"